A hypnotist is able to predict murders by a terrifying sea monster. In reality, he causes the murders through his lovely assistant, who is the reincarnation of the monster.

A mad stage hypnotist Dr. John Basso (Les Tremayne) reverts his beautiful assistant Doreena (Pat Delaney) into the physical form of a prehistoric sea monster she was in a past life. Using this power he attempts to find fame and fortune by predicting a series of murders and then using the monster to carry them out.—Jeremy Lunt <[email protected]>