Andre Crawford killed and raped 11 black women between 1993 and 1998
He didn't leave behind any DNA, fingerprints or witnesses, investigators said
The only woman who survived, Claudia Robinson, played dead, she reveals in a new episode of Oxygen's 'Mark of a Serial Killer' that aired Thursday
Crawford escaped the death penalty and was instead sentenced to life in prison, where he died in March 2017 from liver cancer.