CNN CNN Newsroom March 9, 2014 22:42:00
Was guilty? >> after i had seen all of the evidence, it was overwhelming that he was guilty. >> reporter: david martin was one of willingham's court appointed defense lawyers at his 1992 trial. so keeping them honest, what exactly did martin do to defend willingham? the prosecution had two arson investigators on the stand to prove that willingham was guilty. did you have an expert testify? >> we couldn't find one who said that it wasn't arson. >> reporter: couldn't find one. but since the trial, nine. that's right. nine different arson experts have concluded the fire was not arson. what eviden...