Psych season 3 episode 5
Episode title: Disco Didn't Die. It Was Murdered!
Eugene Franks, arrested by Henry in 1978 for plotting to bomb the SBPD, is released after his conviction is quashed by the D.A. When Shawn is instructed to solve the case, his father insists on helping him; however, the case is not as clear cut as he once thought.
