kate s disappearance without police help. sort of remained stealthy as much as possible. time to keep a careful, quiet eye on ethan mack and heather kamp. so gene frazier persuaded his church friend, ethan s landlord, to allow surveillance specialist bobby minter to tuck a hidden camera into the corner of the kitchen window. a camera trained right at ethan s front door. it was a motion detected just like the light that they ve got over the door is. when they drove in, it would light up, and it would light up for our camera. the whole camera itself, keith, was about the size of this little flashlight. it was pointed directly at the apartments. that s pretty slick. no doubt about it. and that s enough illumination to illuminate to see what they would be carrying. and that would lead us to know that they had something to do with kate s disappearance.
reporter: now that was huge. last time kate was seen with that ipod it was at the gym the day she went missing. now a man kate never met said heather gave him the ipod days after kate disappeared. just to be sure this was in fact kate s ipad, tech expert bill caps got the serial number and within minutes had the proof. i examined the registry file to the computers we had access to that kate used in the past so we had proof positive that was kate s ipod. coming up she said well, they didn t find her, did they? i knew they wouldn t find her. was heather kamp the con artist out of the gate? where was cakate waring? ing?
returning to strangers on a train, the a-team felt they were closing in on their mission to find kate waring, but there were more surprises ahead. once again, keith morrison. reporter: the early sun had cooked the marshes of watt mala island. they shared a car to the city and road in silence most of the way, confident the precise directions heather kamp had given them were correct this time. so this was it. it was somehow fitting that bobby, the one they called the human bloodhound, was the first to spot her. and i saw what looked like an animal path where animals or something had pretty much beat down the bush. so i walked out to the animal path and started walking
beat, taser and drown his best friend, a woman he claimed was like a little sister to him. and then after 14 interminable hours, they trooped back into the courtroom and told the judge they could not decide whether or not ethan was guilty of murder. all right. what i m going to do is on the murder charge, i m going to declare a mistrial on that. reporter: mistrial, a hung jury. huge letdown. right. it wasn t going to be over, it wasn t going to end. we were going to possibly have to relive that whole event again. reporter: as she packed up her file, solicitor scarlet wilson vowed to find justice somehow. and then quite unexpectedly there was an intervention from a surprising source. it was ethan mack s own church going, no-nonsense mother. she had testified during the trial for her son, of course,
tiny apartment, and then smothered her, shocked her with a taser, drowned her in the bathtub and dumped her body out on wadmalaw island because he thought no one would ever find her there. so did you think you convinced that jury? i thought that the trial went better than i ever could have hoped. reporter: except that is for two things, one, would the jury believe ethan actually killed his best friend kate? and two heather kamp is a liar. heather kamp is jealous of kate. heather kamp is the one stealing. reporter: but heather s testimony did seem to terrify one person, ethan mack himself, and it showed. when he was in the courtroom waiting for the jury too com co back, we have that picture, what was happening with your client? at that point, you know, true