Trivia: Contemporary or modern-day altered version of the "BTK" (Bind, Torture, Kill) serial killer - Dennis Rader - who murdered at least ten women from 1974-1991 in the Wichita, Kansas area. Rader was arrested in 2005 and received ten life sentences, but the "Clovehitch Killer" was killed by his son and made to look like an accident or suicide.
Trivia: The movie's title, The Clovehitch Killer", reflects serial killer Don's "trademark" of leaving a rope tied with the clovehitch knot somewhere at the murder scene (e.g, pipe outside on the house).