case revolved around the -- what so-called scientific evidence, and that was absolutely destroyed. and then you ended up with the character assassination block. some courtroom observers believe the defense had already created a reasonable doubt that testifying was in fact, risky. especially for paul, said his friend. >> knowing paul the way i know paul and the way he could be interpreted incorrectly, i was very nervous about paul taking the stand. >> risky or not, paul was determined to tell the jury his side of the story. >> i thought, you know, if there was any way this jury thought this man was responsible for this, now they know for sure that he's not.