Lenore and Frank Davis are about to have their second child. As Lenore gives birth, the newborn vanishes and leaves behind five dead bodies. It's up to the police and Frank to figure out where their mutated child has gone.

• Larco Productions
• Warner Bros. Pictures
• John P. Ryan
• Sharon Farrell
• Andrew Duggan
• Guy Stockwell
• James Dixon
• Michael Ansara
• Robert Emhardt
• William Wellman Jr.