Psych: Season 2, Episode 10

2 - 10: Gus' Dad May Have Killed an Old Guy

After Gus' parents (Phylicia Rashad and Ernie Hudson) are arrested for murdering an old man around Christmas time, Shawn sets out to prove their innocence, and at the same time show them that he is not a bad influence on Gus. Psych's first annual Christmas special.