C.O.P.S.

The Case of the Big Frame-Up (1x29)

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Mickey O'Malley, LongArm's father gets arrested for a crime he didn't commit. He's falsely accused of stealing priceless furs from a warehouse and is sent to prison for it. It's up to both his son and his grandson Brian to help clear his name and send the real crooks responsible for the fur heist to the slammer.