Focuses on 19 mystery series that were primarily released during the 1940s. The shows covered range from such enduring favourites as Sherlock Holmes and The Saint to lesser-known efforts, such as the Whistling comedies with Red Skelton and the Monogram Shadow features. For each there is an overview of the source material, the individual films, and the performers who acted in them. Also included is a review and a discussion of quality and cohesiveness of the plot.