The unusual convertible Doris Hillman (Dame Angela Lansbury) drove was a Kaiser Darrin. Only 435 production Darrins and six prototypes were built. Its entry doors slid on tracks into the front fender wells behind the front wheels, which was patented in 1946, had no side windows and a three-position Landau top. The car's only criticism by enthusiasts was the front grill, which looked like it "wanted to give you a kiss."
In the first scene, Edward Shaw (Keith Andes) roams about his room in the boarding house wearing only form-fitting pajama bottoms and stripped to the waist, giving audiences ample chance to view his impressive musculature from every conceivable angle. In a comic twist, an attorney enters the room, and one of his first lines of dialogue to Edward is "Come now, you're not the first man to lose his shirt!"
When Edward Shaw (Keith Andes) gets into a taxi after leaving his office, in the background, the old Sunset Theatre is seen, which was located on Western Avenue just north of Sunset Boulevard; the double feature shown on the marquee is Da Vinci also Julius Caesar (with Charlton Heston), which dates the shot as May 1954. The theatre no longer exists. The intersection has been redeveloped.
In order to please the Italian music unions, an agreed number of American films had to be re-scored by Italian composers for release in Italy. The irony here is that whilst Les Baxter had his original music replaced by Costantino Ferri, Baxter himself would later join AIP and re-score over a dozen movies previously done by Italian composers.
In a tongue-in-cheek tribute to leading man Keith Andes' spectacular physique, the name of the agency Doris Hillman (Dame Angela Lansbury) suggests to Edward Shaw (Keith Andes) was named the "He-Man Insurance Company."