Question: Elmer Wayne Henley Jr. was convicted in 1974 for his role in a series of murders in Houston, Texas, between 1970 and 1973 in which a minimum of 28 teenage boys were abducted, tortured, raped and murdered by Dean Corll, whose  crimes became known as what?
Sentence (from "Elmer Wayne Henley"): Elmer Wayne Henley Jr. (born May 9, 1956) is a convicted American serial killer, incarcerated in the Texas Department of Criminal Justice (TDCJ) system.
Relevant evidence: Yes