1.
Milwaukee: where most of his killings were
2.
Hydrochloric-Acid: poured in the brain of victims, and used to help clean bones
3.
Souvenirs: he often kept body parts and other mementos of his victims
4.
Lobotomy: performed on victims to make them "zombie-like"
5.
Cannibalism: he would eat some of the organs of his victims, preparing them like any other piece of meat
6.
Dismemberment: he would cut apart the victim's body, and clean the bones
7.
Photographs: he would take pictures of his victims as a memento
8.
Triazolam: also known as Halcium- a medication for insomnia that he used to subdue victims
9.
Skulls: one of the many forms of souvenirs he kept
10.
Necrophillia: he was known to carry out sexual acts with the corpses of victims
