christina morris, who didn't like the dark, was walking to her car. another guy offered to walk with a her. her buddy called her had. a few minutes later, steven texted christina. >> that means her phone's not on. >> or out of service. >> steven slept it off and drove home late saturday morning. >> i shot her a text and said let me know when you get home and whatever your phone charges. >> three days later on tuesday afternoon, christina's mom johnny, now living in tulsa, oklahoma, got a text from christina's friends. >> asking me if i heard from christina. i said no. why? she sent me back a message. her boss called me and said she never showed up for work. >> she hadn't shown for her shifts on saturday or tuesday. >> i immediately got a feeling in my stomach that i never had before. something's wrong. i sent christina a message on her phone and hunter. >> hunter. >> he never called me back. >> johnny called christina's dad. >> i asked her father if he heard from her. he said no. anna had not heard from her. i said something is wrong. >> mark, his wife