him and that's exactly what birdsall did.itted that he driven the man to the crime scene. but the detective had a plan. >> we actually put knock to feed on his phone, we wanted to find out who is talking. two we have the driver, we have the killer, now we want to find out if there's more people involved. >> detective birdsall don't believe that harvey was a dragon for, so hidden by. it so he hoped that by releasing the driver and tapping his phone, he could uncover what was really going on. there was only one problem, after he was let go, the driver didn't reach out to anyone. >> the only person ever spoke to was nick harvey. >> the driver was not part of a larger group. he had nothing whatever to do with lynn's murder. >> so he was telling the truth? >> it turns out, yes. >> dead end. so they kept on digging into next background, and remember, this was a guy with a clean record. he came off with a perfectly ordinary young. man >> we talk to the family, they were all incredulous -- >> next? family >> next. family. correct >>