you know derek dorsey? i was like, yeah, he's one of our customers. he's like when's the last time you were at the house? i told him i was there friday or whenever it was. >> they also asked him if he knew anything about kim. even then he said he had no idea why the police were so interested in the dorseys. >> she was very sweet. very nice. she would always -- i only saw her a couple times. >> one of them was that friday. he had been called to the dorsey home to fine tune the entertainment system. while he was there, he noticed a chill between the husband and wife. >> i remember she walked -- she walked by and said, hey, guys, i'm headed to the gym. i said okay, we'll see ya. and derek didn't say anything to her. so just -- i thought that was weird. i was like, uh, you don't say bye to your wife? by guess he was more interested in getting his electronics fixed, i guess. >> because something must have jumped out at you. first of all, you don't even know this couple very well. >> kind of weird. they didn't ha