Lyudmila Pavlichenko
Lyudmila Mikhailovna Pavlichenko (; 12 July 191610 October 1974) was a Soviet sniper in the Red Army during World War II, credited with 309 kills. She is regarded as one of the top military snipers of all time and the most successful female sniper in history.
Richard Kuklinski
Kuklinski would claim to have killed numerous people over the next 30 years. He also claimed to have shot Carmine Galante. Lack of attention from law enforcement was partly due to his consciously ever-changing methods which did not establish a "modus operandi": he used guns, knives, explosives, tire irons, fire, poison, asphyxiation, feeding people to cave rats, and even bare-handed beatings "just for the exercise". The exact number has never been settled upon by authorities, and Kuklinski himself at various times claimed to have killed more than 200 people. He favored the use of cyanide, since it killed quickly, wasn't blood-messy and was hard to detect in a toxicology test. He would variously administer it by injection, by putting it on a person's food, by aerosol spray, or by simply spilling it on the victim's skin. One of his favorite methods of disposing of a body was to place it in a 55-gallon oil drum. His other disposal methods included dismemberment, burial, or placing the body in the trunk of a car and having it crushed in a junkyard. He also claimed to have fed living human beings to cave rats in Pennsylvania and recorded footage in order to collect contracts for torture and safe disposal of a body. Upon viewing one of these tapes, DeMeo reportedly could not finish watching and said Kuklinski "had no soul". Kuklinski described that the rats would dispose of a human body in about 2 days, including the bones, leaving not even a trace.