and you didn't want it to be dark because you wanted to keep looking. >> reporter: the next big search was planned for saturday morning, february 19th -- one week since cathy had last been seen. >> we got all the maps ready, and we had just got another box donated of flyers. and everything was set. >> reporter: and then around 3:40 a.m. saturday, there was a knock on mary's front door. coming up. police find cathy's car. >> cathy's shoe was on the floorboard and there was blood within the interior of the car. >> what had happened to cathy? when "the promise" continues. when "the promise" continues saved an average of $412," you probably won't believe me. but you can believe this, real esurance employee nancy abraham. look her up online. esurance, it's surprisingly painless.