I was quite intrigued by the trailer for this. Somehow, though, they seem to have managed to squash all that's interesting about the film into it... It reminded me a great deal of "Se7en" (1995) with Denzel Washington "Deke" a former detective with a history that resulted in him being relegated to a rural uniformed role. He is despatched to the big city to collect some evidence whereupon he becomes embroiled in an investigation led by the cocky "Baxter" (a rather wooden Rami Malek) into a series of brutal killings. The title of the film is the gist of Washington's character - he is methodical and detailed in his methods, and together this unlikely alliance starts to bear fruit - they get their suspect, but he (Jared Leto) is no fool, and soon the game of cat and mouse leaves us uncertain as to whom is pulling who's strings. The first half-hour is quite well structured and effective, we get a sense of the mystery and the two stars gel quite well together. The second hour of the film, though, is really pretty poor with an ending that I felt really let the whole thing down. Any semblance of plausibility is sacrificed, almost as if director John Lee Hancock felt he was running out of time so had to cram too much into the closing stages - and so we are left with a hastily cobbled together conclusion that really underwhelms. Not a film you need bother seeing in the cinema - it is bound to be on a streaming service shortly to help you kill 2 hours.