. >> chris melcher went on to explain that he and strickland were no longer on good terms. several of his guns. so he had him arrested. >> he had the gun robbery put a damper on the relationship. >> strickland pleaded not guilty to the charge and was released soon after. but the charges were still pending. and volume and wondered, could strickland have written that letter as some kind of elaborate payback for melcher having strickland arrested? >> i know there was bad blood between david strickland and melcher, but to accuse someone of murder? >> if you think that letter was made by david strickland, and you think it includes things only the killer would know? >> i think the logical inference was that he had something to do with the murder. >> finding david strickland was now the detectives top priority. according to melcher, strickland left utah after his arrest and went to texas. so detective well made the same. only this way would turn out to be the investigations third and final person of interest. >> coming up! a suspect, not acting at all like you might expect. >> so