- Released on May 18, 1979
- Running time: 90 minutes
- Production and Distribution Co: American Cinema Productions
- Directed by Aaron Paul
- Written by Ernest Tidyman (screenplay), from a story by Pat E. Johnson and Ernest Tidyman
- Starring: Jennifer O'Neal, Chuck Norris, Clu Gulager
- When the detectives of an undercover police unit are being mysteriously killed by a martial artist, a professional kickboxer is hired to assist them.
- He hears the silence. He sees the darkness. He's the only one who can stop the killing.