WATCH: Man sentenced in cold case murders solved with chewing gum

Convicted killer Mitchell Gaff was sentenced to 50 years to life in prison for the murders of two women in the 1980s.

​Convicted killer Mitchell Gaff was sentenced to 50 years to life in prison for the murders of two women in the 1980s.  US Convicted killer Mitchell Gaff was sentenced to 50 years to life in prison for the murders of two women in the 1980s.