The clues would lie here, an abandoned mansion. Eerie, haunting. Where was the the killer hiding . Cold, calculating eyes. Lifeless. He was almost a ghost. Could they catch him . Could they stop him . I get chills all over. Im kind of on the edge of my seat. He truly thought he could outsmart us. Im lester holt, and this is dateline. Heres Dennis Murphy with the unusual suspects. Reporter consider for a moment that cozy word home and all it evokes warmth, family, shelter, security. Got it . Now reflect on what happens when those four walls are breached. When nightmares cross the window and kicks in the door. When a haven becomes a house of horrors. So how does that feel . Just ask lloyd irvin. Im laying on the couch. I wake up, and theres two Gunmen Holding guns over me, pointing them, holding them down, youre being robbed. Dont move. More than six years have passed since that night in august, 2008, here out the Nations Capital in a nice neighborhood in Prince Georges County, maryland.