This guy freaks me;
http://en.wikipedia.org/wiki/Jeffrey_Dahmer
But he's very dead now.
Russia and Belarus have lots of serial killers, but they aren't that well known in Western Europe or America.
He may be dead, but still as scary and creepy.
Arrest
On July 22, 1991, Dahmer lured another man, Tracy Edwards, into his home. According to the would-be victim, Dahmer struggled with Edwards in order to handcuff him, and ultimately failed to cuff his wrists together.[35] Wielding a large butcher knife, Dahmer forced Edwards into the bedroom, where Edwards saw pictures of mangled bodies on the wall and noticed the terrible smell coming from a large blue barrel.[36] Edwards punched him in the face, kicked him in the stomach, ran for the door and escaped.[37] Running through the streets, with the handcuffs still hanging from one hand, Edwards waved for help to a police car driven by Robert Rauth and Rolf Mueller of the Milwaukee police department.[38] Edwards led police back to Dahmer's apartment, where Dahmer at first acted friendly to the officers. However, Edwards remembered that the knife Dahmer had threatened him with was in the bedroom. When one of the officers checked the bedroom, he saw the photographs of mangled bodies, and called for his partner to arrest Dahmer.[39] As one officer subdued Dahmer, the other opened the refrigerator and found a human head. Further searching of the apartment revealed three more severed heads, multiple photographs of murdered victims and human remains, severed hands and penises, and photographs of dismembered victims and human remains in his refrigerator.[40]
The story of Dahmer's arrest and the inventory in his apartment quickly gained notoriety: several corpses were stored in acid-filled vats, and implements for the construction of an altar of candles and human skulls were found in his closet. Accusations soon surfaced that Dahmer had practiced necrophilia and cannibalism. Seven skulls were found in the apartment.[41] A human heart was found in the freezer.