When a clairvoyant predicts the death of a wealthy man, a detective must navigate a web of black magic, cults, and dark secrets to solve the mystery. Along the way, he encounters decapitations, car crashes, and a husband-wife relationship filled with intrigue. The plot takes a supernatural twist with the theme of reincarnation and the presence of a wheelchair-bound invalid.

"The Unknown" was the final entry in Columbia’s I Love A Mystery series. A woman hires two detectives to keep her alive long enough to claim her inheritance.

A San Francisco airplane bound for South America crashes, and among the scorched debris is found a shrunken native human head, neatly packaged. The perplexed police contact a local anthropology museum about this unclaimed piece of grisly baggage, where they intersect with Jack and Doc, two private eyes, called there to meet a mysterious woman who had a case for them and wanted to meet in private.