Around 53 minutes into the film on the veranda in a romantic scene with a beautiful Swedish woman, a rather large bee flies into the scene and flies right between them. They don't break and the bee flies away.
According to the Internet Movie Car Database, the car Mitchum drives off in at the beginning of the film is a 1949 Delahaye 135 Cabriolet Chapron.
Genèvieve Page and Ingrid Thulin (as Ingrid Tulean) are " introduced" in the opening credits, despite Page's eight and Thulin's sixteen prior credits.
This film was made in lieu of a fifth season of the TV series of the same name.
The film can be viewed as the only episode of the "Foreign Intrigue" TV series in full colour, and with none of the main actors from the series.