A young girl is killed at the beach in Malibu. Professor Otto Lindsay suspects that it is some form of mutated fish. However, his son Richard, who was a good friend of the girl, thinks that it is a madman who has a grudge against Richard and his friends. Soon the list of victims grows.

Private detective David Ross has two apparently unconnected cases to investigate in the same day. In the first he is hired by a millionaire who paid a large ransom for his kidnapped daughter twelve years before, but she was never seen again. Now a woman has come forward who claims the young girl she raised is the millionaire's missing daughter. Later, Ross is contacted by a retired burlesque dancer who's about to publish her memoirs and possibly reveal the secrets of some important people, but someone is determined to stop her.

Holly and Sandy strike up an instant friendship; they don't know however that they have more in common than they'd like. When tragedy strikes, their relationship is tested.