It's a rare occurrence, but get ready to see this more then once. Saw 4 plays more like a detective story lifted from a page of a who-dun-it novel. This time, we delve deeper into John's past, his ex-wife, and the real secrets about what made him Jigsaw. During his autopsy, it's reveled his stomach contains an audio tape. The tape warns that his work will continue.

It seems that die-hard fans don't wish to know about what's in the story, since I had to re-edit my comment so that none of the story would be revealed (except that which you see in the ads anyway). In my previous comment, I said nothing about the ending, yet just giving away some of the plot is enough of a no-no. I don't blame them, since this 4th outing has too many elements that make it easier to predict what's going to happen. Regardless, you'd have to be some kind of rare genius to figure out what will happen in the end.

The series has flowed like a smooth, well-oiled Rube Goldberg machine. It's the most complex of the bunch, in some ways, outdoing the previous ones. I repeat: it begs to be watched again. Just when you thought that the previous Saw Traps had done everything they can to a human body, this one has some clever ones of it's own (not as gruesome as Saw 3, though). The autopsy scene is set to the extreme; the MPAA stating that most viewers have now gotten used to seeing programs like CSI and other medical procedures, so they let this slide easier.

Deceptive, dark, very edgy and well written, the Saw series can easily end here. It's almost necessary to have watched the previous Saws, but can stand on it's own as one of the best of the chapters. Of course, it leaves it open for yet another in the series, which will be in production soon. I don't know when I will tire of the series, but honestly, I can't wait to see what other delicious traps they cook up next.

During the autopsy of John Kramer (Tobin Bell), the coroner finds a tape inside his stomach and calls Detective Hoffman (Costas Mandylor). Meanwhile, the police find Detective Kerry dead and the SWAT Commander Rigg (Lyriq Bent) is absolutely traumatized with the tortured corpse of Kerry and obsessed to save Detective Eric Matthews (Donnie Wahlberg) that has been missing for six months; however Hoffman asks him to take vacations and leave the case. The FBI agents Strahm (Scott Patterson) and Perez (Athena Karkanis) join Hoffman's team to investigate the legacy of Jigsaw. But Rigg is abducted and forced to participate in another sick game to save Eric's life.

"Saw IV" has a messy and absurd story, indicating that the franchise has really finished. The director Darren Lynn Bousman uses a style of frantic images and flashbacks with annoying noises and does not give time to the viewer to think how absurd and stupid the screenplay is. The result is a sequence of gruesome and gore scenes disclosed in an extremely fast pace that make impossible even to recall the characters of the previous movies of the franchise. "Saw" is over! My vote is three.

Title (Brazil): "Jogos Mortais IV" ("Deadly Games IV")