it doesn't take las vegas detective dean o'kelley long to see red flags. >> it was immediate for me at the at the crime scene. >> one of his first questions is why sharon's 52 year old husband took so long to dial 911 in the first place, more than ten minutes after a neighbor had already reported hearing shots fired. boom, boom, boom. but tom has an explanation and a dialed 911, and the phone didn't work. >> and i remember saying, what a time for vonage to go out. >> tom tells detectives he finds sharon's cell phone on a table right here. >> i tried 911 again and it was busy. >> a suspicious detective, o'kelley, also discovers evidence at the crime scene that tells a very different story than the one tom reenacts on video. >> i just just kept right on going. boom, boom, boom. >> there was no blood in the hallway. >> and if the shooting had taken place, as tom described on the video, there would be splatter and shell casings where he fired. >> we're not missing shell casings. we're not missing bullets. but they were all in the garage. >> it contradicts tom's claims of an ambush from ins