A grim but good summation.I suppose it gives them a feeling of power or whatever. He's denying any involvement in Jared's abduction even though his DNA is on the child's clothes, so I don't hold out any hope that he'll cough in Jacob's case. At least they may stand some chance of finding him by looking at Heinrich's movements over the years though.
(And a grim thought, I have to wonder are there other victims?)