The last of Rialto Film's Edgar Wallace films to be shot in black and white, yet it was one of the most successful films of the series with approximately 3,500,000 viewers during its initial theatrical run and approximately 1,500,000 more during the following years up to 1970. It also was the last film of the series directed by Harald Reinl (he directed the first one, "La maschera che uccide (1959)" and the last appearance of his wife Karin Dor. Both made five Edgar Wallace films, four of which together.
Film debut of Uschi Glas. As her Bavarian accent was quite strong back then (she later managed to hide it more and more), she was dubbed by another actress in this film. However, her original voice can be heard briefly in the theatrical trailer.
Heinz Drache, Grit Boettcher, Agnes Windeck and Elisabeth Flickenschildt where considered for undisclosed parts.