Bud Abbott and Lou Costello play London bobbies trying to solve a series of murders. Could it be Dr. Jekyll (Boris Karloff)? Or his alter ego Mr. Hyde (stunt man Eddie Parker)? Or both? The comedy this time relies more on slapstick rather than the team’s patented play on words routines. The best gag is Bud saying “Follow me!” and then pushing Lou in front of him. Karloff plays a rather wimpy Dr. Jekyll in his only portrayal of the role. The special effects and transformations are good, but not up to par with Meet Frankenstein and Meet the Invisible Man’s excellent work. Also with Craig Stevens, who played Peter Gunn.