Like its predecessor, Saw II centers around a serial killer who spends so much time designing complicated torture devices with which to murder his victims that it’s a wonder he ever gets around to the actual killing. This time around, he has filled a booby-trapped house with a group of random people, including the teen son of a police detective (Donnie
Wahlberg) who is on his trail. There is a last-minute twist, similar to the one in Saw, that
is supposed to jar you, but here’s the funny thing about 90 minutes of bludgeoning and bloodletting: It usually just leaves me numb.