Hurden is performing terrible experiments with patients, that always die afterwards. The patient's chest opens up with no heart inside, only the arms of the dead ones are reaching out from its chest, trying to get out. In the Deptonn hospital Dr. Death cannot feel fear. The experiments continue until one evening Hurden succeeds and the patient doesn't feel fear and pain anymore. Father Temius then performs a ritual and creates an artificial death in a physical body. Death cannot have a heart.
more information...