Upon learning he will go on temporary assignment to San Francisco, Ness quips to Federal District Attorney Asbury, "I'll send you a postcard from Fisherman's Wharf." Fisherman's Wharf didn't start to become a familiar tourist destination until the late 1930's, considerably after the time frame of this episode. Incidentally, one of the early promoters of Fisherman's Wharf was Frank Lanza, then-boss of San Francisco's Mafia family.