serial killers

Illinois State Police have teamed up with university students to help shed light on 23-year-old cold cases believed to be the work of a serial killer.

If there is any internet list you don't want to be on, it's this one yet Illinois has now suddenly been ranked as a favorite destination for serial killers and their hideous crimes.

Their murders were violent and numerous and seemingly without motive. Take a look inside the infamous Harpe Brothers' Illinois hideout.