without its key? if you don't have a key, is it easy to steal a car as the movie depict? >> it's certainly not a 1999 mercedes. it's hard to hot-wire, it's just hard to steal. it you almost need a key to gain access to it. >> if your car doesn't have a key, the next stop is a car dealership to have a new one need. but first, gates and his crew searched the house looking for deede's spear mercedes key. without success. and gates quickly became convinced of one thing -- you thought finding deede's car was going to be the key to this? >> that was going to be extremely important. >> deede's friends and family pointed out posters. and along with law enforcement launched a massive search. >> an army of people band together to try to help find her. and then we broke up into teams and we met everything out in one mile increments to start to search every parking lot, to look for her car. >> we would ask people, have you seen this woman?