>> one of the robbery victims, bob dewar, was brought in for a photographic lineup.n't identify mason as the man who stole the car. so police needed to look further. >> they needed something more. and "what more" was me. >> the man who bought the murder weapon in 1956 and rented a room at a ymca in shreveport, louisiana, had printed his name on the register. paul edholme, a forensic document examiner, was asked to compare gerald mason's handwriting to the signature of george wilson on the ymca register. almost immediately, edholme noticed that some letters seemed to jump off the page. >> first was the capital "g," because we had "g" in george and "g" in gerald. and as far as the height relationship, as far as the width of the letter, as far as the slant, the amount of strokes it took to form the letter, each one of those was consistent, and that was very important. >> there were other similarities in the letter "d" and "s," "o," "n." and there was something more. >> what i noted in mr. mason's handwriting was from 1957, at that time he was 23 years old, until 1999, h