The first film of the Edgar Wallace series to be shot in an aspect ratio of 2,35:1. In order to be able to include some insert shots of London, new material had to be shot on location in UltraScope. In all the previous films of the series, archive footage from Face of the Frog (1959) and The Devil's Daffodil (1961).
To make the Edgar Wallace series more "up to date" and attractive for the box office, producer Horst Wendlandt had to decide whether to start shooting future films either in color or in anamorphic widescreen. He decided to go for widescreen, as shooting the films in color still didn't seem necessary to make them more appealing to 1963's German audiences and he also felt it would defeat the low-budget concept of the series. It was not until Der Bucklige von Soho (1966) that color was introduced to the series.