Question: Henry: Portrait of a Serial Killer is a 1986 American psychological horror crime film, the characters of Henry and Otis are loosely based on real life serial killers Henry Lee Lucas and which American drifter and serial killer who was convicted of six counts of murder?
Sentence (from "List of serial killers by number of victims"): In many cases, the exact number of victims assigned to a serial killer is not known, and even if that person is convicted of a few, there can be the possibility that he/she killed many more.
Relevant evidence: No