kittle looked at known handwriting samples from both nancy and richard. despite similarities there were differences. >> she used her ampersands quite extensively through her writing, every fifth or sixth line would have it. whereas, richard always used and for the verbiage. >> kittle also noticed that nancy and richard made their capital is differently. >> richard used one down stroke like a 1 whereas nancy used a down stroke and then a cross at the top and bottom. she was willing to take a lot more time in executing them than richard was. >> their lower case fs were different, as well. >> richard used a clockwise motion coming down from the top of the f down to the bottom. he would swing off clockwise to finish the lower loop whereas nancy always went counter clockwise. >> kittle concluded richard wrote the diary entries about nancy's brother, bill. >> absolutely certain that he had written that. >> 100% certain? >> yes. >> prosecutors now believed richard lyon had forged nancy's diary to cover up the murder. >> he never crossed his mind he was going to