>> reporter: by then, conrad said he realized heidy had been shot in the head. when you went to heidy, did you see a gun? >> no. >> reporter: he remembered the pop he had heard and wondered if a stray bullet might have come through the bathroom window and hit heidy. >> i was trying to think of the noise and how it wasn't very lou and, you know, maybe someone could have shot something at the house. >> reporter: it seemed farfetched but he said neighborhood vandals had recently been shooting the back of his house with paint balls. >> i was utterly confused. >> reporter: within minutes, sergeant crook arrived. conrad by now had moved to the doorway of his home to wave crook down. >> he had blood on his hands and he was screaming and shrieking. >> reporter: conrad led the sergeant through the front door, up the stairs, and then into a scene straight from a horror movie. >> i could see heidy laying there. she was naked, blood everywhere, just right at the top of the stairs, just this horrific