willoughby hills, ohio detectives knew they had lisa canfield's killer.to kill my mom, please. the blood curdling call dispatchers heard from lisa's. then 13 year old daughter, megan sent police to the scene. what is going on? >> my. >> there? they find sabrina covered in blood, a knife in her hand, and foster mom lisa's lifeless body covered in stab wounds. >> they had an argument or anything with lisa last night? no, no, everything was fine. >> sabrina says she blacked out, claiming some type of amnesia, and it turned out. >> keury car coming out of the bedroom with a knife in your hand? >> no, but her adopted little sister fully witnessed sabrina repeatedly stabbed their mother. >> you hfe and stab lisa. i missed it, and megan called the police. ockimey true. 3xn it is. i'm sorry. >> i've never been a murderer. >> while investigators knew sabrina killed her foster mom, detectives soon grew puzzled by lisa's husband kevin, specifically his behavior the night she was killed. >> when kevin got here that night, you know, he was told that his wife had passe