More mayhem and comedy capers from Abbott and Costello who were in the process of meeting all the famous film 'frighteners' when this murder lark was made. Having just co-starred with Lon Chaney Jr and Bela Lugosi, to say nothing of the Invisible Man, the boys now had as guest star the master chiller himself. Karloff plays an evil old Indian (the turbanned variety) who chases little Lou through the Lost Caverns in a supposedly hair-raising climax. Overall, though, this is a lukewarm and lacklustre dose of chuckles and chills.