P9. Gruesome Murder cases you've probably never heard of

Dennis Rader, the "BTK" killer.

Known as the BTK Killer, Dennis Rader, used to break into his victims' homes, in and around Sedgwick County, Kansas, and stalk them before making his move. He would then  "bind, torture, and kill," them, which is where he got his nickname from, according to The Wichita Eagle. 

He killed 10 people between 1974 and 1991 but wasn't arrested until 2005. Once apprehended, police searched Rader's home and found photos of Rader with his victims. Rader was charged with 10 counts of first-degree murder and is now serving 10 consecutive life sentences at El Dorado Correctional Facility in Kansas.