The Grinder: Colton Haynes stars as Rob Lowe's son in exclusive first look

You’ve met Mitch Grinder’s mentor and his colleague/lover. Now it’s time to meet his son.

Colton Haynes — whom you know from such shows as Arrow and Teen Wolf — guest-stars Tuesday in that role on Fox comedy The Grinder. Introduced in the show within the show, a.k.a. the legal drama The Grinder, Luke (Haynes) appears in an attempt to help his dad, Mitch Grinder (Dean Sanderson/Rob Lowe), through a rough patch.

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Check out the video above to see Dean turn to the acting knob all the way to 11 and play Mitch as a crying, drunken mess of a paternal/savior figure who is about to realize how much he needs his son — and, yes, to watch Stuart (Fred Savage) and his family, including Dean, react to this plot twist.

The episode, which also features Maya Rudolph, airs Tuesday at 9:30 p.m. ET on Fox.