Adam-12 - Season 4 Episode 3 : The Grandmother 1975

Malloy and Reed investigate a robbery in a store run by a group of "grandmothers", who sell small homemade items, then later return the money. The suspect later robs an antique shop but is captured when he returns to the first store to attempt another robbery, and the officers purchase some items from the "grandmothers". Other incidents include a high-speed chase of three robbery suspects, who are captured with the help of Sgt. MacDonald, and a priest stopped for a traffic violation who wants to have a drug dealer arrested for selling him marijuana.