Torture

[David Sklansky]

A serial child kidnapper takes the kids and buries them alive in coffins. They suffocate in 48 hours. He is captured a few hours after taking his last victim. He CONFESSES but will not tell where the child is buried. Is it morally wrong to torture him if that is the most effective way to find the kid? If you say, yes explain why. If you say no then explain why torture is illegal even in cases like this (as it surely is, in this country anyway).