The suspected serial killer gunned down by a West Virginia prostitute led a double life that may have included a bogus Facebook profile with a picture of a Barbie doll standing over bloodied and dismembered figurines.

Police say Neal Falls, 45, answered an online ad for an escort on Backpage.com and brutally attacked the woman in her Charleston home. When Falls showed up at her door July 18, he started beating and choking her.

The woman, who goes by Heather, says Falls asked, “Live or die?” before pressing a gun to her chest. At one point during the struggle, Heather grabbed a rake to fend him off. That’s when Falls set down his weapon to subdue her and she snatched it away. She fired a fatal shot into Falls’ head in self-defense, cops say.