know better sleep with sleep number. >>> ashley wallace's younger sister brie found ashley unconscious one morning and urged her mother to call 911. >> the doctors said she was probably ten minutes from death. >> thanks to brie's quick action and excellent medical treatment, ashley survived. >> i actually woke up in the hospital and i had no idea what day it was. i had no idea where i was. one of the detectives was asking me questions like, what was in that note that you wrote? i was like what letter, what pills are you talking about? all i remember was having a drink with my mom. that's all i knew. >> ashley denied writing any suicide note and denied any involvement in killing her father mike wallace and stepfather david castor. >> i was always skeptical. i didn't know exactly what happened. i didn't know what to believe really. >> prosecutors felt that whoever typed the note was also the person that poisoned the two husbands. >> to find out who typed the suicide note, investigators confiscated the castor family's computer and sent it to computer evidence specialist francis bracken. t

match olamide's former roommate, ashley todd martin, or any of the other suspects questioned in the case. but police were still searching for their prime suspect, maurice wallaceredit card activity, he was traveling throughout the southern united states. to track him more closely, investigators focused on his cell phone activity. >> through cellular phone forensics, we were able to locate very specifically where maurice wallace was in realtime. >> when wallace made a call from a shopping mall in atlanta, georgia, police were standing by. >> police! don't move! don't move! >> when police arrested maurice wallace, they found olamide's keys in his possession, which was a big giveaway at that point. >> wallace wasn't driving olamide's car. he was driving a rental car instead. >> there was a gas can that was located in his rental vehicle. we suspected it may have been used to start this fire. >> wallace denied any involvement in olamide's murder. >> i've got to go ahead and read you a couple of things. i'm sure you've, you know -- >> where is my attorney? why am i here without an attorney? you're going to ask me some questions. nine times out of ten, whatever i ans