Overview: Shawn and Gus investigate the death of Leonald Callahan, aka Diddle, a computer cryptologist who was the baritone in Gus’s old college a capella group.
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First Air Date: Jul 07, 2006Last Air date: Mar 26, 2014Season: 8 SeasonEpisode: 120 EpisodeRuntime: 43 minutesQuality: HDIMDb: 7.90 / 10 by 794 usersPopularity: 428.84Language: English