he needed to talk to john creech again.serving eight years on a cocaine charge. his second conviction for dealing drugs. far from an outstanding citizen. could it be proof he murdered gavin smith? >> went to him, didn't ask many questions. just put a picture with the shallow grave and the on ramp body. >> how did he react? >> the first call he made was to his attorney. >> but all phone calls were surprising. like the call detectives found in the cell phone of creech. john creech was on the phone a lot. >> he was calling multiple people, very intensely. >> like, three or four or five calls and same person? >> exactly. >> some of those calls were dumb his friends at the gym. >> we did a multi location search warrant and we had everyone who we believe might have helped on that evening. we hit all those houses, all at once. >> one by one, those buddies turned. they told detectives how a frantic creech showed up late that night. how he persuaded one friend to get rid of javon's cell phone. got another friend to hide gavin's car