According to Morgen, Sommer had a secret compartment underneath the floor under his desk. He kept his private instruments of torture concealed within this compartment such as the needles he used to kill his victims after he was done torturing them, he would inject them with carbolic acid, or inject air into their veins causing their death by embolism. On occasions, after private late night torture sessions Sommer would hide his victim's bodies under his bed until he could dispose of them in the morning.