reporter: on the security tape, rick looked closely and saw the man in the baseball cap leaning through the window of the enclosed pharmacy section seemingly checking out names from pill bottles. over and over, detective arnold stared at the grainy walgreens tape. the man in the baseball cap looked familiar. one person sure looks like reporter: as if james quisenberry, erin s family fend who phoned her minutes earlier and he told the detective how much he wanted to help the investigation. rick wasn t buying any of it now. quisenberry had become a prime suspect, though rick wasn t ready to arrest, not yet, not until he had the other man but that wouldn t be easy. although two suspects in his sights, the mystery man was not in focus. how clear is the image of the second guy? it s not very clear. coming up, it turned out it was an imagine that was all too
sign of life in rick arnold s discovery. it was a mystic piece of evidence that turned out to be crucial. coming up, a cadillac leads to an unlikely clue when dateline continues. dateline continues cause let s be honest. nobody likes dealing with insurance. right? see, esurance knows it s expensive. i feel like i m giving my money away. so they re making it affordable. thank you, dennis quaid. you re welcome, guy in kitchen. i named my character walter. that s great. i d tell you more but i only have thirty seconds so here s a dramatic shot of their tagline so you ll remember it. when insurance is affordable, it s surprisingly painless.
anger. reporter: with two kids of hish own this hit rick arnold hard. on the spot he made a promise to erika s grandmother. you said we are going to find out who did that. yes. reporter: that is a lot to promise, isn t it? yes, it is. reporter: coming up a glimmer of hope for baby erika. i was holding her and she opened herng eyes. reporter: when dateline continues. dateline continues. it recommends our best custom fit orthotic to relieve foot, knee, or lower back pain. so you can move more. dr. scholl s. born to move.
had promised erika s grandmother. what kept you going during some of those times you felt i was hitting a dead-end oo ? reporter: a 2-year-old baby was shot. reporter: rick had enough on quisenberry to arrest him earlier baugh he wasn t ready yet. he wanted more. both men from the walgreens video so he could play them off of each other in dueling interrogations. and now he had them. you ve been waiting and waiting patiently so it s time to do your thing, right? now it s time to move. the detective moves to get each suspect to implicate the other. not knowing he was nearly out of time. coming up. reporter: so you didn t know you were playing against the clock? no. no idea at all. no. no idea at all y won three cars, two motorcycles, a boat, and an r.v. i would not want to pay that insurance bill. [ ding ] -oh, i have progressive, so i just bundled everything with my home insurance.
in a martha. i promised judy harper on may 18th, 2006, i would get those answers and now we have. reporter: when did you make when they called you? they couldn t get away with it it forever. williams and quisenberry would stand trial for the murder of earon and attempted murder of erica. eye for an eye, the death penalty hung over both of them. coming up, an emotional trial, and the little girl who not only survived, but thrived. when dateline continues. beep goes off ] now that you have new dr. scholl s massaging gel advanced insoles with softer, bouncier gel waves,