disappeared, when she came home impaired and then had her tires slashed. >> she never regained full memory of what happened. but she was able to tell everybody who she had been with that night. >> the person cathy had been with that night, sam lopez. when police asked sam about that night, he remembered something very specific. >> a hickey. >> on her neck? >> on her right here. >> way down here on her shoulder? >> right here, right here. >> sam claimed it was no big deal. >> i didn't want to hit her up. >> that night police records showed sam received two traffic citations, both while driving cathy's car. one was an open container ticket for drinking alcohol in a parking lot. the other for failing to stop at a stop sign. the cop who pulled sam over for not stopping said sam flew through the intersection. when he approached the car, it