the driver who looks just like steve mcdowell does something odd. rather than pumping gas, he walks towards the motel 6 . >> appears to be looking at his wife's ditched car. >> investigators were certain that mcdowell ditched crystal's car and did so with the expectation it would conveniently disappear. nobody stole it yet? >> i think that's went through his head. [ bleep ] the car is still here. >> if mcdowell was acting alone, once he left the car, he would've been on foot miles from his house. >> for two weeks were going how did he do this? how did he get back home? >> they pulled security camera footage along all the roads in the area and they found this video of a man riding a bike in the driving rain along the i-10 feeder road. it was time stamped 7:05 a.m. 25 minutes after crystal's car was dropped off. that is when the pieces fell into place place >> we saw bicycle in the garage when we were at the house. it has unique make wheels. >> then he remembered, his alibi was that he had been shopping at this walmart across the freeway from the mote