Man, are you gonna be talking when you come out of this movie! Saying things like 'but why...' and 'if she...' and 'wouldn't he...' and 'how come...' as you try to trace your way back through the twisted logic of the plot.
On some level, nearly every thriller asks viewers to suspend their disbelief. Along Came a Spider expects you to kick yours in the nuts, break both its legs, and not make hospital visits. You can't even send flowers.