The car the Killer picks up at the Chatsworth station is a 1954 Ford convertible. Sgt. Morse's patrol car is a 1957 Mercury. Tony Santell's car is a 1957 Dodge station wagon. The car Matthews commandeers to get him ahead of the bus is a 1957 Plymouth convertible.
Eve Brent, who played the part of Shirley Conway, is listed in the final credits as Jean Ann Lewis, her married name before it was changed later that year (1957) to Eve Brent by director Samuel Fuller.
Chatsworth, an actual location in the Los Angeles suburbs, is mentioned in the narrative. Usually some fictional town name is used.