meanwhile, bart's roommate chris brashear hides in bart's suv outside the whitaker home. >> at that pointand entered the house with the key and the alarm code. >> did you see them leave pappadeaux? >> well, yeah. so then i pretty much followed them home. they pulled in the driveway and i just kept going just around the block, you know, one block over. and then in a minute, chris came walking, like, out to the car, got in the backseat. he said bart's brother had walked in first. and, when chris shot him -- he said before he shot him he thought he smiled. and then chris shot his mom and then shot bart's dad in the shoulder. and then, he acted like he wrestled around with bart and shot bart in the shoulder. >> you could characterize that interview as chilling. i don't think there's anyone who could watch that and not wonder how a person could be so cold. >> reporter: unaware of champagne's confession, chris brashear agrees to an interview -- but quickly becomes very uncomfortable. >> i'm just gonna go. is that all right? >> yeah. there's the door. >> reporter: so sergeant slot, steven champa