That buzz you hear in the air is the return of the inventive carnage first masterminded by serial killer Jigsaw (Tobin Bell), whose legacy of brain-teasing punishments continues. Escaping one of the maniac's sick devices, FBI agent Peter Strahm (Scott Patterson) turns a suspicious eye towards another survivor of Jigsaw's traps, police officer Mark Hoffman (Costas Mandylor). Betsy Russell, Julie Benz co-star. Unrated version; 96 min. Widescreen (Enhanced); Soundtrack: English DTS HD 7.1 MasterAudio; Subtitles: English (SDH), Spanish; audio commentary; featurettes; theatrical trailer; bonus digital copy for iPod, Mac, PC. Two-disc set.