one of the most important points has been that charles ericson told some different stories about whathe and ryan allegedly ran this way. down the alley. >> the problem its there were bloody footprints found going the other way. >> correct. but he didn't know that. >> the state calls charles ericson. >> reporter: at the trial, ericson somehow knew all of these details that alluded him during the interrogation. and was the star witness against ryan ferguson. >> he was down here. he had a belt and he had his, his foot on his back, the victim's back. and he was pulling up on the belt. like this. >> reporter: that detailed k ee account was supported by the testimony of the janitor, jesse trump. who identified ferguson as one of two men he saw in the parking lot immediately after the murder. >> would you point to the individual or individuals, please? >> yes. >> ericson and trump were the case against ferguson. because after all, the dna found at the scene, footprints, and fingerprints, none of it matched ryan ferguson. but it was enough for a jury to convict. >> we the jury find that defen