cedillo decided to go inside.still closed. >> and i happened to go up to aeropostale and there is a manager that's actually in there working. and i was able to confirm that carter cervantez did not work for him and he doesn't even know who she is. >> well, so much for that story. >> yes, sir. >> reporter: cedillo turned his attention to finding carter cervantez. no luck. you didn't see her at all in there? >> no, sir. >> reporter: did anybody see her? >> no, sir. >> reporter: so, cedillo had a disgruntled employee coming back to the mall where she'd been fired. her boyfriend was telling lies about a job she didn't have, and a car that looked like hers had been spotted at the scene of a murder. detective pate still had david mallory out in the parking lot and was looking for a reason to hold him. >> he said that he had a driver's license. but he didn't have his driver's license with him. >> reporter: reason enough. he arrested mallory and brought him in for questioning. but carter? seemed to have vanished. wasn't a