In the 1930s and 40s, Hollywood made a huge number of "B" detective series films. They were called "B" because they had lower budgets, were shorter than the average film and were meant to be the second film in a double feature--the lesser of the two films. In general, these films were a lot of fun to watch BUT they also were very formulaic and repetitive. I enjoy Sherlock Holmes, Charlie Chan, Boston Blackie and the Saint, but will gladly admit that once you've seen a few they all seem to blend together--particularly the Blackie series. It is because of this sameness that I really, really appreciate the Crime Doctor films--they are not so predictable and offer some nice innovations.
This movie is the first, and from what I've seen, the best of the Crime Doctor films. It sets the stage for future films by explaining how Warner Baxter became a psychiatrist and crime solver and is well-written and interesting throughout--even though this movie's plot isn't original--having been a variation on a film from 1936. The acting is very good and the film is played more seriously than the average film of the genre--with no goofy sidekick or stupid police investigator. And, frankly, this is a good thing as the others are clichés that just seem to permeate almost every B detective film. Give it a watch--it's very enjoyable and doesn't disappoint, as the characters behave intelligently and believably.