Psych: Season 3, Episode 5

3 - 5: Disco Didn't Die. It Was Murdered!

In 1978, Henry achieved his career bust by arresting a man who was plotting to bomb the SBPD. When the culprit's conviction gets overturned, Henry must stay out of sight while Shawn attempts to put the would-be bomber behind bars again, only to realize that the case goes way beyond one man.