they looked into joshua veal's alibi, and it checked out.ille. andrea canning: nowhere near the dorsey home, as far as they could tell. kim's husband, derrick, likewise had a solid alibi, but detectives still weren't sure what to make of him. they knew he was an unfaithful husband, which gave him a possible motive. at this point, were you able to rule out derrick dorsey? no, absolutely not. i mean, you know there's-- he could have definitely had something setting this up. andrea canning: then again, if he had hired someone to kill kim, why was he acting so darn helpful? derrick's calling me daily. obviously, there are times that i had to call him, you know, to get some information about things at the house. and so yeah, he's cooperating. he's doing everything, you know, that i'm asking of him. andrea canning: finally, officers and technicians were done processing the crime scene, and derrick could return to the house. so the night we go to turn the house back over-- i think was halloween, the 31st. andrea canning: they hoped the walls might