Dragnet night, citizens! A double-foature: "Big Book" (6 April 1950) about, believe it or not, porn, and "Big Car" (30 November 1950). Somebody's knocked over 15 food markets in four months. "Your job: stop 'im."
Update: "He dragged out a steamer trunk from under the bed and counted out a stack of books and pamphlets covering the general topic of degenerate filth in stories and photographs."
Update II: what incredible sound effects Dragnet has.