Overview
An international criminal arrives in London, and a detective is anxious to pin something on him for some unprovable murders of former lovers. The villain starts to suspect servants and henchmen of being a police spy known as "Number Six".
Cast
- Ivan Desny as Charles Valentine
- Nadja Regin as Nadia Leiven
- Michael Goodliffe as Det. Supt. Hallett
- Brian Bedford as Jimmy Gale
- Joyce Blair as Carol Clyde
- Leonard Sachs as Weiland
- Maxwell Shaw as Luigi Pirani
- Harold Goodwin as Smith
- John Welsh as Assistant Commissioner
- Barrie Ingham as House Agent