This is a well above average entry in the Edgar Wallace film collection, which at just over 70 minutes whisks along with plenty of characters and dialogue. It also has an unusual opening credits sequence for a 1938 film.
The only problem is that you'll probably guess the identity of The Ringer quite early on, although the finale does add a couple of twists on top of this revelation. Therefore, it's best to leave the image gallery until after viewing as one or two of the photos are giveaways! You can compare this version with the 1952 filming of the story, The Ringer, also released by Network. Personally, I think this is the better film.