Dr. Howard Latimer's house is 33 Ennismore Gardens Mews, Knightsbridge, South West London, England.
A sign in the aeroplane asks passengers to fasten " lap straps", an archaic version of seat belts.
Latimer's girlfriend Laura's car is a mid-1950s MG Magnette ZB saloon; Latimer is described by Inspector Dane of Scotland Yard as driving a Daimler.
Final film of Rene Ray.
Opening credits: All characters in this photoplay are fictitious.