After a chemistry class melee, Anne decides the only way the quads can adopt the new puppy they want is to prove they can take care of it together.
On the quads' 10th birthday they think they're too old for Tom's traditional appearance as "The Quadfather" and decide they each want their own party.
Nicky, Ricky and Dicky have a crush on a new girl in school. When Tom's ice dancing arch rival opens a sporting goods store, the quads declare war.
Dawn's had enough of sharing a bedroom with her brothers, but there's something important missing in her fabulous new room -- Nicky, Ricky and Dicky!
It's an epic battle when the quads' fight over the TV remote results in a week without television, and Tom's super remote has a few bugs to work out.
The quads want to replace weird babysitter Tanya with the much cooler Josie, but an unauthorized party when Anne and Tom are out could ruin that plan.
After Anne and Tom forbid the quads from watching a scary movie on TV, they do it anyway, then start to think their parents are turning into zombies.
When their dog becomes a media hero after stopping a store robbery, his original owner comes to claim him -- but that doesn't sit well with the quads.
Dawn is thrilled to be chosen for the girls' soccer team until she realizes there's a "mean team" initiation that requires her to make fun of Nicky.
In the case of the unflushed toilet the quad detectives must solve the mystery or the family trip to the water park will go down the drain.
The Harpers are all looking forward to the Halloween dance, but nothing goes as planned, not even for Anne and Tom, who're hoping to change the past.
Dawn sells a bracelet Anne gives her to buy tickets to a fanfest. Meanwhile, Tom takes away the boys' video games and insists they enter a 10K run.
The quads get Christmas jobs at the store to make money for a new video game console, but competition quickly turns them from elfish to selfish.
The quads' plan for getting out of family game night backfires when they try to find some couple friends for Anne and Tom.
After Ricky's classmates see his bear, Lieutenant Blueberry, the quads make a bet on who can go the longest without their childhood security items.
Dawn retaliates when she learns her brothers have been keeping secrets from her, but when things escalate, can they get back to their circle of trust?
The school talent show is causing a lot of Harper family friction when Anne wants to retire their puppet theater and Dawn wants to change the routine.
When they're given a Valentine's Day assignment to do something special for someone, the quads can't seem to hit the mark -- even with Cupid's arrows!
Five annual checkups ... five times banned from a doctor's office. The quads are hoping this year's visit will be perfect, with a cookie tower reward.
After Ricky is pressed into doing a magic trick that gets him grounded, his siblings sneak him into a party where a magician does a disappearing act.
While the quads argue about how to tackle their group history presentation, they learn their family has a surprisingly intriguing history.
Eager to draw more readers to her school blog, Dawn writes a juicy column about the local urban legend known as Pigfoot.
Nicky, Ricky, Dicky and Dawn find their social status challenged by a competitive rival with an enviable hangout space.
Already swamped with activities and extracurriculars, Dawn finds yet another passion to pursue: the tuba.
The quads' plan to pretend they don't know each other has surprising consequences at summer camp.
It's sibling versus sibling as Ricky faces off against the upstart Dawn to become their new class president.
Tom and Anne take Nicky, Ricky, Dicky and Dawn to the mall, where the quads get into trouble while enjoying their newfound freedom.
The quads set out to sell Tom's wild idea for a shoe prototype. But is there a corporate spy in their midst?
After Nicky, Ricky and Dicky ruin Dawn's dreams of meeting WNBA star Candace Parker, the three boys try to make amends.
The quads set up their own court to resolve conflicts among themselves. But what starts out as a good idea turns into something a bit less admirable.
Nicky, Dicky and Dawn conspire to teach the all-knowing Ricky a lesson about superstitions, but their plan works a little too well.
Internet fame goes to Nicky's head after a video of him pretending to be a superhero goes viral.
While vacationing in Hollywood, the quads get mixed up in a mysterious -- and dangerous -- case of mistaken identity.
While Anne's away at a spa, the quads rent out the garage to a loud-as-thunder band in hopes of making some money.
Tom and Anne decide to leave the quads alone without a babysitter, but it doesn't take long before the dog escapes and chaos reigns.
Seeking some alone time from her brothers, Dawn enrolls in an activity she thinks they'll have no interest in -- ballet.
When Ricky gets upset that his siblings don't take the sport of mini-golf seriously, he finds a new crew of snobby friends who do.
While at the movies to see the latest blockbuster, the quads worry their parents may make them look uncool.
Dawn is alarmed -- to put it mildly -- when she learns that Nicky, Ricky and Dicky may all be developing feelings for Mae.
Longing to be part of the popular crowd at school -- but wary that Ricky might hurt their chances -- the other quads come up with a plan.
While Ricky struggles to embrace the absence of guidelines in art class, Dawn searches for ideas to make the Spring Festival a success.
When a mysterious new kid moves in next door, the quads try to befriend her in hopes of gaining access to her awesome treehouse.
Desperate to avoid missing out on the big class trip to the museum, Dawn hides her illness with a little help from her brothers.
After Dawn discovers that Nicky, Ricky and Dicky are reading her diary, she schemes to get even on them by penning fake entries.
Hollywood action star JT Steele moves into the quads' house to research a role. His only request: don't tell their friends he's there.