chuck gillingham is a deputy district attorney in palo alto. was gasoline there?no question at all. it's in her hair. you can smell it when you walked in just with your own nose, and the remnants of the gas can was found next to her right hip. there was still enough remnants of the gas can to identify the type and make and model of the gas can. >> wow. that's like somebody leaving a gun beside the body with their fingerprints all over it, isn't it? >> no fingerprints and no physical evidence beyond that. >> but it was so clear that it was an arson? >> correct. and the arson was not at issue. >> no, it was cold-blooded murder that was at issue because jennifer schipsi did not die in the fire. according to forensic experts, she was dead before the fire started. the method? a particularly intimate form of killing. death by strangulation. >> strangling someone is a very personal killing. it's a very angry killing. it's not like shooting someone from a long way away, i don't imagine. you're touching the person and feeling their life's blood ebb from them. >> who could

listening to chuck gillingham take the jury through the last days before jennifer's murder. how.? of her text message history had been deleted. but law enforcement has changed a lot. it's had to to keep up with high tech. the pal alto cops managed to find a phone expert all the way across the country in new hampshire who had a very deep look into that cell phone. and was able to pull up thousands, literally thousands of delete didded text messages between paul and jennifer in the last few months of his her life. and oh, boy. >> from jennifer, you're nothing but a selfish cold hearted ungateful human being liar. that didn't read like any old kwarel. and the timing. jennifer sent that text to paul right at the end of the elaborate birthday party she threw for him when she had perhaps 12 hours left to live. in fact, she was so upset about something that she refused to go to the hookah lounge after the party, walked all the way home on a broken heel, texting all the way. jennifer. good. stay away from me. i just got home. paul, i'm saying away this time for good. what a way to end my