Saw III

After being left in the bathroom to die, Detective Eric Matthews breaks his foot with a toilet lid to escape his shackle. Six months later, the aftermath of a Jigsaw game is discovered by Officer Daniel Rigg's SWAT team. The victim Troy had to rip chains from his body to escape a bomb. Detective Allison Kerry points out that the room's exit was welded shut, breaking Jigsaw's modus operandi of giving his victims a chance to survive. While reviewing the videotape, Kerry is abducted and awakens in a harness hooked into her ribs. Despite her retrieving the key from a beaker of acid and unlocking it, the trap inevitably kills her.