. >> keyon told investigators he was spending the night as fiancée's house.d told him she had heard on the news that two women on history had been murdered. >> i just ran out of the house. my heart was racing. i just hopped the gate, hopped the car, i'm running late, some speeding, i'm still calling at the same time. and when i got there they asked me for my name. and the police officer just turned his head thing anyone said ok we got the sun. here and i just broke down you know. >> keyon's alibi checked out. it wasn't him. investigators also interviewed kirkland, karen's ex husband and caresses father. he too had an airtight alibi. he'd been in atlanta at the time of the murders. >> did you go a lot of places? together >> next on detectives list was karen's former boyfriend, michael lacey. he refused to take a lighted tech to test so police interviewed him three separate times. >> did you all have keys to each other's? house >> definitely. not >> you could just walk over and walk in? >> we would. call >> he is someone that we had to rule out completely and w