Besides Jigsaw, Saw IV focuses most on SWAT Commander Rigg (Lyriq Bent), who is haunted by the loss of his colleagues -- especially Detective Kerry (Dina Meyer) -- at the hands of Jigsaw.

Saw II was a financial success ... Timothy Burd as Obi, Dina Meyer as Detective Kerry, Lyriq Bent as Officer Rigg, and Tobin Bell as John Kramer / Jigsaw. Charlie Clouser composed the score.

Jigsaw and his apprentice Amanda are dead. Upon the news of Detective Kerry's murder, two seasoned FBI profilers, Agent Strahm (Scott Patterson) and Agent Perez, arrive at the depleted police ...