Mitchell Gaff, a convicted serial rapist, now stands charged with two gruesome murders after DNA collected from his gum matched old crime scenes.

Mitchell Gaff, a convicted serial rapist, now stands charged with two gruesome murders after DNA collected from his gum matched old crime scenes.

Mitchell Gaff has pleaded guilty to the 1980 and 1984 murders of two mothers in Everett, Washington. He described the crimes in detail in court Thursday.