hit heidy. >> i was trying to think of the noise and how it wasn't very loud 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 scene. >> reporter: what's conrad doing? >> he's screaming and he's yelling. >> reporter: and, as these police photos make clear, covered in blood. >> i'm asking him, like, conrad, what's going on? what happened here? he said, she was in the bathroom, you know, and just, i don't know what happened. everything was just different