- HD 1080
- Runtime: 95m.
- Status: Released
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- Languages: en
- Country: United States of America
- Director: Oley Sassone
- Stars: Famke Janssen, Leo Rossi, Colleen Coffey, John Scott Clough, Christopher Pettiet
- keywords: serial killer
- Production_studio: CineTel Films, New Line Cinema
- The Relentless IV: Ashes to Ashes is featured in the top rankings of 1994
- #46 in Top Thriller Movies of 1994
- #18 in Top Horror Movies of 1994
Sam Dietz is back and must find and stop another serial killer before he kills again. Detective work for Dietz is tough having to juggle two gorgeous women - one his partner, and the other his shrink, who holds the key to the case.