could she have been targeted by neighbors she tangled with? she made an enemy? >> she made an enemy for sure. >> or maybe the enemy lurked within. some said wendy had a history of emotional troubles. >> she began screaming obscenities and shouting. >> could this beloved teacher have had multiple personalities? >> he said that's not wendy, that's shawna. >> was this a woman broken or a woman taken? to find out what happened, an elite group of detectives launched an elaborate mission. >> they're described as right out of hollywood. the staged kidnapping, the fake blood is truly phenomenal. >> all leading up to a sit-down with a man they called "mr. big." a high stakes gamble to reveal the truth on tape for the children left behind. >> what was it like to hear that? >> shattering.