George Sanders plays a dual role, as the crime-solving Saint, Simon Templar, and also as Duke Bates, the head of a diamond smuggling ring.
The story, which involves diamonds smuggled into the U.S. in a mummy, is not the easiest in the world to follow, as it's often unclear which character is the real Saint. This seems to have been a deliberate story-telling device by the filmmakers, to keep the audience guessing, but I simply found it frustrating, as I wanted to know who to root for.
The film's other main drawback is that despite the presence of Bela Lugosi -- and of course Jonathan Hale as the Saint's friendly nemesis, Inspector Fernack -- the cast is extremely bland.
This was one of just four films leading lady Helene Whitney appeared in; she and the Saint seem to have had some sort of past romantic relationship but it's not explored in any depth. The next couple films will have Wendy Barrie, who also appeared with Sanders in the early FALCON films, and hopefully those movies will be a bit livelier.
The cast also includes Donald MacBride, John F. Hamilton, Thomas W. Ross, Elliott Sullivan, Byron Foulger, Edward Gargan, and Pat O'Malley.
THE DARK MIRROR (1946), in which the effects are almost seamless.
Whether he's playing the Saint or the Falcon, Sanders is always pleasant company in his RKO mysteries, but this one is a lesser effort.
This was one of three SAINT films directed by Jack Hively. The screenplay of this 67-minute film was by Ben Holmes, and the cinematographer was J. Roy Hunt.
THE SAINT'S DOUBLE TROUBLE is available on DVD in the Warner Archive's George Sanders Saint Movies Collection. I previously reviewed the first two films in the set, THE SAINT STRIKES BACK (1939) and THE SAINT IN LONDON (1939).
THE SAINT'S DOUBLE TROUBLE has also been released on Region 2 DVD. It had a VHS release as a TCM double feature paired with THE SAINT IN LONDON (1939).
THE SAINT'S DOUBLE TROUBLE can also be seen from time to time on Turner Classic Movies.