The grandson of the commander of the Auschwitz Nazi death camp has revealed how he learned the horrific truth to his family's dark history, and his bid to escape his inner turmoil after the shocking discovery.

In an emotional interview, 62-year-old Kai Höss said he was at school on the day he realised he was the grandson of Rudolf Höss, the infamous Auschwitz commandant responsible for the murder of 1.1 million innocent victims - as revealed in the documentary film 'The Commandant's Shadow'.

Höss, now a pastor from Renningen, Germany, grew up in Ludwigsburg not knowing of the murderous sins of his grandfather, until that fateful day in school.

Today, he says he has been left with inherited guilt over his grandfather's evil actions, and is cursed by his family's attempt to avoid the subject for years - something he attempted to rectify by making a documentary with his father.

'It was in sixth or seventh grade,' when he learned the truth about his family, Kai recalled. 'The Holocaust was a topic in class, and the name Höß came up. I went home and asked, 'Mum, is that us?'

'She said, 'yes, that's us. Rudolf Höss is your grandfather',' he told the magazine.

In an emotional interview, 62-year-old Kai Höss (pictured centre) said he was at school on the day he realised he was the grandson of Rudolf Höss, the infamous Auschwitz commandant responsible for the murder of 1.1 million innocent victims - as revealed in the documentary film 'The Commandant’s Shadow' (pictured). Right: Kai's father walks with him at Auschwitz

In an emotional interview, 62-year-old Kai Höss (pictured centre) said he was at school on the day he realised he was the grandson of Rudolf Höss, the infamous Auschwitz commandant responsible for the murder of 1.1 million innocent victims - as revealed in the documentary film 'The Commandant's Shadow' (pictured). Right: Kai's father walks with him at Auschwitz

Kai's father - Hans-Jürgen Höss - is seen depicted as a young child in 'Zone of Interest'
The film stars German actor Christian Friedel as Rudolf Höss. Above: A scene from the film

Kai's father - Hans-Jürgen Höss - is seen depicted as a young child in 'Zone of Interest' (left). The film stars German actor Christian Friedel (right) as Rudolf Höss

Rudolf Höss, commandant of the Auschwitz concentration camp, was hanged next to the Auschwitz crematorium in 1947 after being captured by Nazi hunters and tried for the part he played in the killing of more than one million people at the death camp. He is seen in this historic photograph moments before he was put to death

Rudolf Höss, commandant of the Auschwitz concentration camp, was hanged next to the Auschwitz crematorium in 1947 after being captured by Nazi hunters and tried for the part he played in the killing of more than one million people at the death camp. He is seen in this historic photograph moments before he was put to death

Rudolf Höss lived in a villa at the camp. In this photograph, his wife and four of their five children are seen playing in a paddling pool. Their idyllic family life is depicted in Martin Amis's novel 'The Zone of Interest' which was adapted into an Oscar-winning film by the same name

Rudolf Höss lived in a villa at the camp. In this photograph, his wife and four of their five children are seen playing in a paddling pool. Their idyllic family life is depicted in Martin Amis's novel 'The Zone of Interest' which was adapted into an Oscar-winning film by the same name

A photo shows the family's villa with the Nazi death camp in the background

A photo shows the family's villa with the Nazi death camp in the background

To his horror, this confirmed to him that Kai's father - Hans-Jürgen Höss, was indeed the son of Rudolf Höss: the mass-murderer's fourth child with wife Hedwig Hensel.

Rudolf Höss was the commandant of the Auschwitz death camp from May 4, 1940 to November 1943, and again from May 8 1944 to January 18, 1945.

He lived in a house on the grounds of the camp with his wife and family, and their life is depicted in Martin Amis's novel 'The Zone of Interest' which was adapted into an Oscar-winning film by the same name in 2023.

During that time, Höss tested and perfected methods to accelerate Adolf Hitler's 'final solution' - the dictator's plan to exterminate Nazi-occupied Europe's Jewish population - including introducing the use of Zyklon B into gas chambers.

As a result, more than a million people were killed at the camp as part of what later became known as the Nazi Holocaust. In total, Nazi Germany killed an estimated 17 million people on the basis of their ethnicity, religion, political beliefs, disability or sexual orientation, including six million Jews.

After the war, in 1947, Rudolf Höss was tracked down and captured by Nazi hunter Hanns Alexander, a German Jew who had fled to England in 1936.

Höss was ultimately sentenced to death in Poland, and was hanged that same year at Auschwitz - 15 years before Kai was born.

'I was born in 1962, so when I was young, Höss was no longer a big topic in public,' Kai told Germany's FOCUS magazine.

'But when I was 16, I read my grandfather's biographical notes, which he had written in prison. The book was on my parents' bookshelf. I was shocked. My grandfather was the greatest mass murderer of all time.'

After this discovery, he said, 'I just wanted to get away.'

The Zone of Interest, an adaptation of the novel by the late Martin Amis, tells the story of how the commandant ofAuschwitz-Birkenau lived just outside the death camp, where more than one million Jews were murdered in the Holocaust. Above: Rufolf Höss - depicted by Christian Friedel - is seen watching his children as they play in a paddling pool

The Zone of Interest, an adaptation of the novel by the late Martin Amis, tells the story of how the commandant ofAuschwitz-Birkenau lived just outside the death camp, where more than one million Jews were murdered in the Holocaust. Above: Rufolf Höss - depicted by Christian Friedel - is seen watching his children as they play in a paddling pool

The Höss family post for a photo. Pictured anti-clockwise from left: Inge-Brigit, Hedwig and Annagret, Hans-Jürgen, Heideraud, Rudolf and Klaus

The Höss family post for a photo. Pictured anti-clockwise from left: Inge-Brigit, Hedwig and Annagret, Hans-Jürgen, Heideraud, Rudolf and Klaus

Brigitte pictured left

Four of Rudolf Höss's children, including Hans-Jürgen, who is pictured bottom-left

Hans-Jürgen is seen in the new documentary film 'The Commandant’s Shadow'

Hans-Jürgen is seen in the new documentary film 'The Commandant's Shadow'

Kai Höss (left) is seen with his father Hans-Jürgen in the new documentary as they go on a journey to reconcile with their dark family history

Kai Höss (left) is seen with his father Hans-Jürgen in the new documentary as they go on a journey to reconcile with their dark family history

Kai Höss and Hans-Jürgen inspect a photo showing Rudolf Höss with his wife and children

Kai Höss and Hans-Jürgen inspect a photo showing Rudolf Höss with his wife and children

After leaving school, he trained to be a chef in Stuttgart before going on to join the German army. He was stationed in England for a time.

But his desire to escape his family history led him to Macau, Singapore, Thailand, Bali, China, Egypt and Dubai as part a career in the luxury hotel industry.

Although he lived a life of booze, women and high-end clubs, inside he was completely broken.

'I was an arrogant, self-absorbed 28-year-old with a Rolex on my arm. Upscale nightclubs, double gin and tonics, parties, girls, bodybuilding, six-packs - that was my thing. But inside, I was broken,' he told the magazine.

Kai's turning point came after a near-death experience following tonsil surgery in Singapore. He lost so much blood, he almost died.

In hospital, he stumbled upon a Gideon Bible: 'Faith saved me,' he said, adding that he recognised himself in the story of King David.

'I was an unscrupulous manager. Everything revolved around performance, success and profit. The end justified the means,' he said.

But after meeting a Christian community in Singapore, he found solace and purpose and by Easter 1989, he had decided to follow Jesus, leaving behind his wild life of extravagance and eventually return to Germany with his wife and daughters.

Hans-Jürgen is seen in this historic photograph at the Höss family villa in Auschwitz

Hans-Jürgen is seen in this historic photograph at the Höss family villa in Auschwitz

Daughters Brigitte and Heidetraud Höss are seen with soldiers in Auschwitz

Daughters Brigitte and Heidetraud Höss are seen with soldiers in Auschwitz

The Höss family life is seen depicted in the film 'Zone of Interest'

The Höss family life is seen depicted in the film 'Zone of Interest'

Kai Höss returned to his homeland in 2000, where he now serves as a pastor.

But the family of Hans-Jürgen Höss had kept the truth hidden for years.

Hans-Jürgen was the fourth of five children shared by Rudolf Höss and his wife Hedwig, who he married on August 17, 1929.

Rudolf Höss and Hedwig famously lived in a villa on the grounds of Auschwitz-Birkenau as he oversaw the camp and fine-tuned the horrific methods used by the Nazis to kill more than a million people during the Second World War.

Although Hans-Jürgen grew up in the villa, with the camp's crematorium visible from their garden, he grew up ashamed of his father's actions.

He hid the identity of his father from his wife (Kai's mother) when they first met.

Hans-Jürgen's wife eventually found out the truth from an aunt who had seen a newspaper report about Rudolf Höss's execution in 1947.

As a result, Kai Höss's childhood was marked by silence and repression, and this avoidance put enormous strain on his parents' marriage, he said.

Although Hans-Jürgen never glossed over the family history, he also very rarely spoke about it.

Today Höss still has his own vivid memories of his grandmother, Hedwig. She was a stern, disciplined woman who maintained strict order, he told FOCUS.

'She was tough but also loving with her children' said Höss.

Hedwig, deeply embedded in Nazi ideology, showed no remorse for her husband's actions, believing that they 'rose with the National Socialists and fell with them.'

Following his eventual parents' divorce in the 1990s, Kai said he had no contact with his father for 30 years. That period of no contact ended around six years ago, he said, when his father called him.

The Rudolf Hoess villa is pictured at Auschwitz. It still stands today

The Rudolf Hoess villa is pictured at Auschwitz. It still stands today

A view from the villa at Auschwitz shows how the camp was visible from the windows

A view from the villa at Auschwitz shows how the camp was visible from the windows

One of the rooms inside the villa is seen in this photograph

One of the rooms inside the villa is seen in this photograph

The new documentary provided an opportunity for Kai and his father to address their family's dark history, he told the German publication, as it allowed them to properly delve deeply into their past, and explore the effect it has had on them as men.

A powerful moment in the documentary sees Kai and Hans-Jürgen's meeting with Anita Lasker-Wallfisch, a 98-year-old Auschwitz survivor.

It also sees them visiting the Auschwitz memorial, which was also an extremely emotional experience for Kai Höss and his father, he said.

This was particularly the case when the father and son stood in front of the gallows where Rudolf Höss was hanged. There, Hans-Jürgen acknowledged his father's crimes: 'He deserved it, he paid. What he did was wrong.'

'I hate what he did, and to a certain extent I hate him. His heartlessness, the meticulous, clinical way in which he fulfilled his task.'

But he said it is important to learn the lesson from this in terms of how evil can take hold of people's hearts.

'The film is a reminder of where populism can lead. Hitler didn't start out by saying 'I'm going to murder six million people and overrun the world with war'. 

[Hitler] said 'I will make you great again, I will give you back your pride'.

Today Kai Höss also frequently wrestles with the question of whether his grandfather has been forgiven by God.

'If he really repented, God forgave him. Then we'll see each other in eternity. But I don't know what really happened in his heart at the end.'

Kai's younger brother, Rainer, was publicly active as Höss's grandson but was later revealed to have exploited the family history for financial gain. 

The Höss family villa still stands on the Auschwitz grounds today.

Höss was appointed commandant of Auschwitz, in the west of Nazi-occupied Poland, in May 1940, when it housed political prisoners. He is pictured on trial in Poland in 1947

Höss was appointed commandant of Auschwitz, in the west of Nazi-occupied Poland, in May 1940, when it housed political prisoners. He is pictured on trial in Poland in 1947

Rudolf Höss (centre) - along with his wife and five children - lived just outside the walls of the concentrations camp where more than one million Jews were murdered in the Holocaust

Rudolf Höss (centre) - along with his wife and five children - lived just outside the walls of the concentrations camp where more than one million Jews were murdered in the Holocaust

After Nazi Germany's defeat in the Second World War in 1945, Höss evaded capture for nearly a year before eventually being arrested after being tracked down by a Nazi hunter

After Nazi Germany's defeat in the Second World War in 1945, Höss evaded capture for nearly a year before eventually being arrested after being tracked down by a Nazi hunter

Höss is seen at his trial in Poland which resulted in him being sentenced to death

Höss is seen at his trial in Poland which resulted in him being sentenced to death

Kai Höss and his father Hans-Jürgen are seen in the film during a visit to Auschwitz

Kai Höss and his father Hans-Jürgen are seen in the film during a visit to Auschwitz

Kai said he is 'not looking for absolution' for his grandfather's crimes, but said he believes his family is cursed as a result of Rudolf Höss's actions, but also his family going on to avoid the topic of their dark history.

'I am not a perpetrator. But I believe in inherited guilt,' he said. 'There is a curse on families when something bad has happened and it is not spoken about honestly. Then the hearts are damaged, it changes the soul.

'Then the children and grandchildren may become Nazis again because they say 'What Grandpa did wasn't so bad after all.' 

'That is also what the documentary 'The Commandant's Shadow' is about. It is about the trauma in the families of the perpetrators and the victims.'

The Commandant's Shadow will be released in selected UK cinemas from 12 July.

The Nazis' concentration and extermination camps: The factories of death used to slaughter millions 

Auschwitz-Birkenau, near the town of Oswiecim, in what was then occupied Poland

Auschwitz-Birkenau was a concentration and extermination camp used by the Nazis during World War Two.

The camp, which was located in Nazi-occupied Poland, was made up of three main sites.

Auschwitz I, the original concentration camp, Auschwitz II-Birkenau, a combined concentration and extermination camp and Auschwitz III–Monowitz, a labour camp, with a further 45 satellite sites.

Auschwitz, pictured in 1945, was liberated by Soviet troops 76 years ago on Wednesday after around 1.1million people were murdered at the Nazi extermination camp

Auschwitz, pictured in 1945, was liberated by Soviet troops 76 years ago on Wednesday after around 1.1million people were murdered at the Nazi extermination camp 

Auschwitz was an extermination camp used by the Nazis in Poland to murder more than 1.1 million Jews

Birkenau became a major part of the Nazis' 'Final Solution', where they sought to rid Europe of Jews.

An estimated 1.3 million people were sent to Auschwitz-Birkenau, of whom at least 1.1 million died – around 90 percent of which were Jews.

Since 1947, it has operated as Auschwitz-Birkenau State Museum, which in 1979 was named a World Heritage Site by Unesco.

Treblinka, near a village of the same name, outside Warsaw in Nazi-occupied Poland

Unlike at other camps, where some Jews were assigned to forced labour before being killed, nearly all Jews brought to Treblinka were immediately gassed to death.

Only a select few - mostly young, strong men, were spared from immediate death and assigned to maintenance work instead.

Unlike at other camps, where some Jews were assigned to forced labor before being killed, nearly all Jews brought to Treblinka were immediately gassed to death

Unlike at other camps, where some Jews were assigned to forced labor before being killed, nearly all Jews brought to Treblinka were immediately gassed to death

The death toll at Treblinka was second only to Auschwitz. In just 15 months of operation - between July 1942 and October 1943 - between 700,000 and 900,000 Jews were murdered in its gas chambers.

Exterminations stopped at the camp after an uprising which saw around 200 prisoners escape. Around half of them were killed shortly afterwards, but 70 are known to have survived until the end of the war

Belzec, near the station of the same name in Nazi-occupied Poland

Belzec operated from March 1942 until the end of June 1943. It was built specifically as an extermination camp as part of Operation Reinhard. 

Polish, German, Ukrainian and Austrian Jews were all killed there. In total, around 600,000 people were murdered.

The camp was dismantled in 1943 and the site was disguised as a fake farm.  

Belzec operated from March 1942 until the end of June 1943. It was built specifically as an extermination camp as part of Operation Reinhard

Belzec operated from March 1942 until the end of June 1943. It was built specifically as an extermination camp as part of Operation Reinhard

Sobibor, near the village of the same name in Nazi-occupied Poland

Sobibor was named after its closest train station, at which Jews disembarked from extremely crowded carriages, unsure of their fate. 

Jews from Poland, France, Germany, the Netherlands and the Soviet Union were killed in three gas chambers fed by the deadly fumes of a large petrol engine taken from a tank. 

An estimated 200,000 people were killed in the camp. Some estimations put the figure at 250,000. 

This would place Sobibor as the fourth worst extermination camp - in terms of number of deaths - after Belzec, Treblinka and Auschwitz. 

Sobibor was named after its closest train station, at which Jews disembarked from extremely crowded carriages, unsure of their fate

Sobibor was named after its closest train station, at which Jews disembarked from extremely crowded carriages, unsure of their fate

The camp was located about 50 miles from the provincial Polish capital of Brest-on-the-Bug. Its official German name was SS-Sonderkommando Sobibor.

Prisoners launched a heroic escape on October 14 1943 in which 600 men, women and children succeeded in crossing the camp's perimeter fence.

Of those, only 50 managed to evade capture. It is unclear how many crossed into allied territory.

Chelmno (also known as Kulmhof), in Nazi-occupied Poland

Chelmno was the first of Nazi Germany's camps built specifically for extermination. 

It operated from December 1941 until April 1943 and then again from June 1944 until January 1945. 

Between 152,000 and 200,000 people, nearly all of whom were Jews, were killed there.  

Chelmno was the first of Nazi Germany's camps built specifically for extermination. It operated from December 1941 until April 1943 and then again from June 1944 until January 1945

Chelmno was the first of Nazi Germany's camps built specifically for extermination. It operated from December 1941 until April 1943 and then again from June 1944 until January 1945

Majdanek (also known simply as Lublin), built on outskirts of city of Lublin in Nazi-occupied Poland

Majdanek was initially intended for forced labour but was converted into an extermination camp in 1942. 

It had seven gas chambers as well as wooden gallows where some victims were hanged.

In total, it is believed that as many as 130,000 people were killed there. 

Majdanek (pictured in 2005) was initially intended for forced labour but was converted into an extermination camp in 1942

Majdanek (pictured in 2005) was initially intended for forced labour but was converted into an extermination camp in 1942