Joe Michael Ervin killed himself after being arrested for the 1981 fatal shooting of Aurora police officer Sue Corr. He is now believed to have killed Madeleine Furey-Livaudais, 33; Dolores Barajas, 53; Gwendolyn Harris, 27 and Antoinette Parks, 17.
Michael Ervin was linked through DNA to four cold cases in the Denver area between 1978 and 1981. He's also accused of killing Aurora officer Debra Sue Corr in 1981.