Perception

Season 3 Summer Finale: "Dirty" - Tuesday, Aug. 19, at 10 p.m. (ET/PT)

When Donnie finds himself in a compromising situation, he calls Pierce for help. As the evidence begins to stack against Donnie, Pierce and Moretti struggle with their own fears and doubts, as they work to solve the case. During the chaos, Pierce must deal with his father (guest star Peter Coyote) after he assaults someone at the assisted living facility.

Directed by LeVar Burton

Written by Jonathan Abrahams

Created by Ken Biller & Michael Sussman