Dragnet

Acting as both a parody and homage to the long-running Dragnet television series, Aykroyd plays Joe Friday (nephew of the original star of the series) while Hanks plays Pep Streebek, his new partner.

Harry Morgan reprises his role of Bill Gannon (partner of Friday’s late uncle), having been promoted to captain. Alexandra Paul plays Friday’s love interest, while Christopher Plummer plays the villain, a soft-spoken televangelist, who secretly runs a cult of Pagan anarchists. Dabney Coleman plays the publisher of a skin magazine called Bait.

As did the TV series, the movie begins with Sergeant Friday’s voice-over narration about Los Angeles and (nearly) ends with a mug shot of the villain and a stern voice-over describing the sentencing.—Wikipedia