defense attorney steve greenberg. >> because they had nothing except for, oh, well, you know, they wereand we don't have any other suspects, so he must have done it. >> there was no physical evidence, you know. there was no sign of forced entry pp, no fingerprints, no dna, no eyewitnesss. there was simply nothing to prove that it wasn't an accident. >> but legendary prosecutor james glasgow completely disagreed. >> with 29 years of experience, there was no doubt in my mind it wasn't an accident. that was clear. >> glasgow had one of the highest conviction rates in the state and he didn't intend to lose this time. his opening statements were powerful, claiming peterson carried out his constant threats to kill savio and staged it to look like an accident. then glasgow attacked the police force and the investigation. >> drew was treated unlike a civilian would have been treated. they let him be questioned in the break room of his own police department. >> were they experts in homicide? >> no. the lead investigator had never done a homicide. a crime scene tech decided very early on, almost

from the author of gadget nation, steve greenberg.und. >> on one side you fill this with cream and sugar and vanilla, this side is ice and rock salt. >> and you literally just throw it for how long? >> 10 minutes to 30 minutes depending on how much -- >> look what happens inside. >> unbelievable. >> i can't. you guys eat it. >> when he was tossing that ball around he was making ice cream. so kids can do it? >> mom sets it up, the kids bounce it around and you have ice cream. a batch of ice cream. it's the soft shell from yay yaylabs, rei.com. take these seats. this is a fan-cooled beach chair. there's a fan built in here. >> where is it? >> in the back. >> it touches your shoulders and neck. >> oh, many i gosh! that's genius. >> you can sit by the pool or a beach or camping. >> is it battery operated? >> battery operated. three-hour charge. i love this. >> so go ahead. keep going. [ laughter ] >> enjoy yourselves. this is called the aqua pouch. you can put your smart phone in here. >> does that work? >> it works great. >> i'm always a