'Ashes to Ashes' brings the 'Relentless' series to a close. One last serial killer to catch, more family drama & Dietz's everlasting quest to get laid. Somethings never change, I suppose. This time a romantic interest is tied to the case, killer allowing Dietz to have a clouded mind and conveniently be one step behind with a suspect in plain sight.
A deranged loon is murdering women in ritualistic fashion. The first victim was a patient of the attractive Dr. Sara Jaffee (Famke Jensen). Det. Dietz (Leo Rossi) sees this as an opportunity to have sex and help the case secondly. When more victims turn up and they're all tied to the psychiatrist, it's obvious she knows more than what she's saying from a mile away. Lastly Dietz has to repair the relationship between him and his now teen son Corey (Christopher Pettiet).
Each entry in this series has had it's quality ultimately decided by the cast and what they do with the killer. We don't get much depth to the psycho and there's no big name like Judd Nelson or William Forsythe playing him to bail them out. Loring Pickering as Dietz's new female partner is decent. Rossi is still Rossi. Famke Jensen isn't reason enough to check this out no matter what others may lead you to believe.
'Relentless 4: Ashes to Ashes' sticks to their stock one note premise, but goes out on a low note. There's some dumb moments, cheap jump scares in this last series entry. The romantic subplot is horrible and the ending isn't much better, but you get a conclusion to the man you've been watching for four films who hasn't always been the most likable guy.