Playing devil's advocate here--with the brucie theory, let us say that Person A has information about the child's kidnappers, but doesn't know where the child is being held, etc etc. Person A knows the kidnappers well, and let's say, hasn't seen the kidnappers since a couple of days before the child was taken. Person A has no reason to cooperate with the person wanting the information of the child's whereabouts, and in fact, can't stand them--is outright hostile to them.

The person who wants to torture Person A knows the above information, but because he is desperate, demands to know more from Person A, so some sadistic torture begins.

Plenty of information is finally gotten from Person A, just not the information that was needed to save the child, and the child is found dead.

Was the torture justified?