Sledge Hammer! - Season 1 - Eps 7: All Shook Up
Hammer and Dori are assigned to locate a serial killer who is bumping off Elvis impersonators. In order to flush out the killer Hammer attends The Famous School For Elvis Impersonators where all the victims were once students. Complete with sequins and pompadour, Hammer enters an Elvis contest and sings The Battle Hymn of the Republic… setting himself up as bait.
About Sledge Hammer!

Title: Sledge Hammer!
First Air Date: 1986-09-23
Last Air Date: 1988-02-12
Status: Ended
Rating: 7.9/10 (from 151 votes)
Language: EN
Seasons: 3
Total Episodes: 41
Network: ABC
Genres: Comedy, Crime
Production Companies: Spencer Productions, D'Angelo Productions, New World Television
Synopsis
Sledge Hammer! is an American satirical police sitcom produced by New World Television that ran for two seasons on ABC from 1986 to 1988. The series was created by Alan Spencer and stars David Rasche as Inspector Sledge Hammer, a preposterous caricature of the standard "cop on the edge" character. Al Jean and Mike Reiss, best known for their work on The Simpsons, wrote for the show and worked as story editors.
Cast

David Rasche
Sledge Hammer

Anne-Marie Martin
Dori Doreau

Harrison Page
Captain Trunk