Collection · 4 movies
Relentless Collection
All 4 movies of Relentless Collection in release order, with ratings and where to stream each one in United States.
Watch Relentless Collection in release order: Relentless (1989), Dead On: Relentless II (1992), Relentless 3 (1993) and Relentless IV: Ashes to Ashes (1994).
Film series follows Los Angeles Police Detective Sam Dietz
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1
Relentless 1989
Two Los Angeles police detectives hunt for a serial killer who randomly chooses his victims from a phone directory.
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2
Dead On: Relentless II 1992
Detective Sam Dietz is paired with a shady FBI agent to track down another serial killer terrorizing Los Angeles.
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3
Relentless 3 1993
Sam Dietz, the relentless police detective, returns to Los Angeles from a self-imposed exile to help the police solve another series of brutal killings committed by another crafty serial killer whom targets Dietz's…
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4
Relentless IV: Ashes to Ashes 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…
Frequently asked questions
In what order should I watch Relentless Collection?
Watch Relentless Collection in release order: Relentless (1989), Dead On: Relentless II (1992), Relentless 3 (1993) and Relentless IV: Ashes to Ashes (1994).
Updated: October 27, 2026 ·