Ken Leung does a great job with his detective role, but Danny Glover sleepwalks through his role as Leung’s partner. As they trail the killer, they uncover other fiendishly ingenious death traps: a man who must step across broken glass to work out the combination of a safe that contains the antidote to a poison he has ingested; a man who must crawl through razor wire to escape a cage, before the timer on the door locks him in forever; and of course, Shawnee Smith in the infamous reverse-bear-trap jaw-breaker.