Nu Jigsaw en zijn kompaan Amanda dood zijn, lijkt het spel afgelopen. Maar als een nieuw videobandje van Jigsaw opduikt, blijkt het spel nog lang niet aan zijn eind te zijn. Twee FBI-profilers proberen de hele puzzel op te lossen en speuren door Jigsaws overgebleven spullen. Maar als een SWAT-lid ontvoerd wordt en onderdeel van het spel blijkt krijgt hij negentig minuten om, behalve zijn eigen leven, het leven van een oude vriend te redden.
Nee, helaas is Saw IV nog niet beschikbaar op Netflix in Nederland.
| Writing | Patrick Melton | Screenplay |
| Directing | Darren Lynn Bousman | Director |
| Camera | David A. Armstrong | Director of Photography |
| Sound | Charlie Clouser | Original Music Composer |
| Production | Jason Constantine | Executive Producer |
| Writing | Marcus Dunstan | Screenplay |
| Production | Mark Burg | Producer |
| Production | James Wan | Executive Producer |
| Production | Gregg Hoffman | Producer |
| Production | Stacey Testro | Executive Producer |
| Editing | Kevin Greutert | Editor |
| Production | Daniel J. Heffner | Executive Producer |
| Editing | Brett Sullivan | Editor |
| Production | Peter Block | Executive Producer |
| Costume & Make-Up | Alex Kavanagh | Costume Design |
| Production | Oren Koules | Producer |
| Production | Leigh Whannell | Executive Producer |
| Art | Anthony Ianni | Art Direction |
| Art | Liesl Deslauriers | Set Decoration |
| Production | Stephanie Gorin | Casting |
| Art | David Hackl | Production Design |
| Costume & Make-Up | Stephanie Ingram | Key Hair Stylist |
| Lighting | Christopher Takacs | Best Boy Electrician |
| Camera | Brian Gedge | Camera Operator |
| Art | Jamie Burke | Construction Coordinator |
| Sound | Jonathan McHugh | Music Supervisor |
| Sound | Jonathan Platt | Music Supervisor |
| Sound | Allan Fung | Dialogue Editor |
| Lighting | Pete Daprato | Rigging Grip |
| Sound | Paul Intson | Music Editor |
| Lighting | Richard Berube | Electrician |
| Camera | Ernest Spiteri | First Assistant Camera |
| Writing | Marcus Dunstan | Story |
| Sound | Tom Bjelic | Sound Effects Editor |
| Lighting | Stephen Myers | Electrician |
| Camera | Steve Wilkie | Still Photographer |
| Directing | Elizabeth Tremblay | Script Supervisor |
| Editing | Nick Paulozza | Digital Intermediate |
| Sound | Mark Gingras | Supervising Sound Editor |
| Visual Effects | Peter Denomme | Visual Effects Producer |
| Lighting | Philip Charles Whitfield | Electrician |
| Editing | Chris MacKenzie | Digital Intermediate |
| Editing | Tom Mayclim | Negative Cutter |
| Art | James R. Murray | Property Master |
| Sound | John Laing | ADR Editor |
| Crew | Warren Appleby | Special Effects Coordinator |
| Visual Effects | Jon Campfens | Visual Effects Supervisor |
| Lighting | Robert DaPrato | Rigging Grip |
| Lighting | Tracy Shaw | Rigging Grip |
| Sound | Steve Baine | Foley |
| Sound | Mark Zsifkovits | Sound Re-Recording Mixer |
| Writing | Patrick Melton | Story |
| Costume & Make-Up | Candice Ornstein | Key Makeup Artist |
| Visual Effects | Voytek Kufner | Animation |
| Camera | James Jeffery | Camera Operator |
| Editing | Trevor Lewis | Digital Intermediate |
| Sound | Andrew Tay | Sound Re-Recording Mixer |
| Lighting | Sean Dawes | Electrician |
| Editing | Tavia Charlton | Digital Intermediate |
| Camera | Kevin LeBlanc | First Assistant Camera |
| Costume & Make-Up | Ciara Brennan | Costume Coordinator |
| Lighting | Ira Cohen | Gaffer |
| Camera | Monty Montgomerie | Key Grip |
| Editing | Nick Iannelli | Digital Intermediate |
| Writing | Thomas Fenton | Story |
| Costume & Make-Up | François Dagenais | Prosthetic Makeup Artist |
| Sound | Jason Hopfner | Boom Operator |
| Sound | Jonathan Scott Miller | Music Supervisor |
| Directing | Elizabeth Scherberger | First Assistant Director |
| Sound | Keith Elliott | Sound Re-Recording Mixer |
| Costume & Make-Up | Stephanie Lees | Assistant Costume Designer |
| Sound | John Douglas Smith | Supervising Sound Editor |
| Camera | Thomas Care | Dolly Grip |
| Editing | Dave Muscat | Digital Intermediate |
| Production | Greg Copeland | Production Manager |
| Production | Greg Copeland | Co-Producer |
| Crew | Alison Reid | Stunt Coordinator |
| Production | Troy Begnaud | Associate Producer |
| Production | Jane Rogers | Extras Casting |
| Crew | Shawn Stewart | Stunt Double |
| Crew | Billy Oliver | Stunt Double |
| Crew | Neil Davison | Stunt Double |
| Crew | Marco Bianco | Stunt Double |
| Writing | Leigh Whannell | Original Film Writer |
| Writing | James Wan | Original Film Writer |
