Saw IV. 2007.
S.W.A.T. team leader Rigg is determined to find Eric Matthews as he believes he is still alive and is now tested by Jigsaw. When Kerry's body is found, two F.B.I agents Straum and Perez are assigned to find where the new game is being played and who is playing.
When I first saw this one I was confused and felt a bit let down the way the story was going, after a few re-watches It grew on me, This is a game within a game, I can see what the creators were doing trying to add Saw III and IV together, three people playing the game at once which was a good idea and a good way to add the twist to the story.
Lyriq Bent plays a good part as Rigg and shows flashbacks as his time a police officer who seemed determined to help everyone who can't help themselves. Costas Mandylor returns as detective Hoffman and a new victim in the game or so we think, the traps are well thought of and executed greatly.
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Have a good day all