along. her unborn son died when she did. crystal had told friends the father of her child was a guy named derek smyer. so you want to find out where derek is. most definitely. we want to find everything about him right now. the detective learned crystal and derek had a quick fling. it only lasted a month or so. they d met at anderson park, which is near both their jobs. by now, it was lunch time. derek wasn t in his office. so williams drove to the park. bringing crystal s work friends with him. and one of them immediately noticed something. she points out a car that derek drives. reporter: his car was easy to spot. it had vanity plates that said my whip, slang for a fancy car. then crystal s friend pointed out derek. and detectives brought him in for a talk. go ahead and compose yourself. what is your last name, sir? smyer. and your first name, sir?
as they had done with c-styles, michelle and monica now tried to find derek. i didn t know derek s name. i thought his name was myers. and i was spelling derek the wrong way. and looking for him, like, i mean, just forever. reporter: if they had managed to tail derek they would have found a guy who didn t seem to fit the profile of a killer. he was doing well, says his sister danielle. he had gotten his bachelor s degree in business, he had went on to start his own company. he was doing great. he was always happy, he was always in good spirits, he was driven. reporter: he still had that silver mustang convertible with the custom plates my whip. although monica and michelle never spotted the car, tia did. i stopped at a light, and derek pulled up next to me in a car with the top down, listening to music. i just felt like this was so unfair that it s a nice, sunny day, and he s going on with life. it just, like, tripped me out. like, this guy really just did