Psych - Season 3 - Eps 7: Talk Derby to Me
A surveillance tape from the latest robbery in a string of break-ins leads Shawn to believe that women are the culprits. He futher narrows the suspects down to a local roller derby team and suggests that in order to pinpoint the people responsible, Juliet needs to go undercover as a member of their team. Though it's technically her investigation, Shawn can't help getting involved in the case.
About Psych

Title: Psych
First Air Date: 2006-07-07
Last Air Date: 2014-03-26
Status: Ended
Rating: 7.864/10 (from 848 votes)
Language: EN
Seasons: 9
Total Episodes: 120
Network: USA Network
Genres: Comedy, Drama, Mystery, Crime
Production Companies: UCP, GEP Productions, Pacific Mountain Productions, Tagline Pictures, Universal Television
Synopsis
Thanks to his police officer father's efforts, Shawn Spencer spent his childhood developing a keen eye for detail (and a lasting dislike of his dad). Years later, Shawn's frequent tips to the police lead to him being falsely accused of a crime he solved. Now, Shawn has no choice but to use his abilities to perpetuate his cover story: psychic crime-solving powers, all the while dragging his best friend, his dad, and the police along for the ride.
Cast

James Roday Rodriguez
Shawn Spencer

Dulé Hill
Burton Guster

Timothy Omundson
Carlton Lassiter

Maggie Lawson
Juliet O'Hara

Kirsten Nelson
Karen Vick

Corbin Bernsen
Henry Spencer