Three young ladies sign up for some kind of training at a naval base. However, their greatest trouble isn't long marches or several weeks in a small boat, but their love life.

Architect Gordon Wales finds fellow apartmenthouse resident Joan Marsh locked out and flirts with her. When she is murdered evidence points to him.

Larry Haines, a mediocre vaudeville entertainer, boards a train for Los Angeles. Aboard, he meets an attractive, blonde British agent carrying a coded message hidden in a brooch—and is being pursued by Nazi agents.

Following the death of her fiancé, Margot Weston is left pregnant and unmarried. Former doctor Jim Howard helps the desperate Margot. When her son is born, Jim helps her find a home for the baby with Phil Marshall and his wife. Margot insists that neither the Marshalls nor the child can ever know that she is his mother.

Sir Charles Baskerville dies at the entrance of his manor, and Doctor Mortimer says he died of natural causes. However, when telling Sherlock Holmes of the case, he feels Sir Charles' death was a result of a centuries old curse that runs in the Baskerville family, which Dr. Mortimer feels will strike at Sir Charles nephew, Sir Henry, who is arriving to claim the Baskerville estate. Holmes sends Dr. Watson in his place, along with Dr. Mortimer and Sir Henry, to the manor and for Watson to keep an eye out for any suspicious actions. Immediately after arriving, Watson notices the queer occurrences at the estate and surrounding moors, and sends Holmes reports of what is going on concerning the life of Sir Henry. Will Holmes arrive in time to unravel the mystery, and who is responsible for Sir Charles' death and the attempted murder of Sir Henry? Is it Dr. Mortimer, neighbor Stapleton, butler Barryman, harmless old Frankland, a mysterious wild man, or is there a curse on the Baskerville family? Very good opening entry in the Rathbone-Bruce Holmes series (even though this film lacks qualities of any ongoing entries.) The film could have been a bit more darker and foreboding (the film does have a movie studio set feel) and have an ending with a little more confrontation to it, but it does provide for much fun. The romantic scenes with Greene and Barrie have little spark, but there are very good red herring performances by the cast, which is a plus for this movie. Rating, 8.