TEENAGE DECISIONS, DIRE CONSEQUENCES AIRING ON "20/20"

Airs Friday, April 4 at 10 pm on ABC

"20/20" reports on the questionable decisions some teenagers make and act on, leading to extremely dire consequences, airing on FRIDAY, APRIL 4 (10:01-11:00 p.m., ET) on the ABC Television Network. Reports include:

· Tyler Hadley was by most accounts, a kid being raised in a nice home with two loving parents, devoted to their two sons. As young Tyler Hadley grew from a beaming Boy Scout into a teenager in Port Saint Lucie, Florida, he fell into the doldrums of teenage boredom in a town where not much goes on. He rebelled against his parents in small ways, but no one could ever guess that Tyler Hadley was about to cross a line to the point of no return. He tweeted about having a party, he texted friends, he even joked to them about killing his parents to make it happen, but when Tyler Hadley threw the party of a lifetime, no one could fathom that his parents lay dead in their bedroom as the party raged. Ryan Smith reports.

· When Daisy Coleman, a 14-year-old girl in the small town of Maryville, Missouri, snuck out of her house to go party with a 17-year-old high school football player named Matthew Barnett, she got far more than she expected� Daisy was offered alcoholic drinks, became intoxicated, and had sex with Matthew. But was it consensual? Her allegations that it was not consensual divided a community and sparked a national debate. For the first time since, we hear in Barnett's own words in a newly released police interrogation video what he says happened that night in his basement. Does his story raises new questions? Matt Gutman reports.

· Teens play dangerous games and sometimes games that kill. When Kristina Fields received a call from her 13-year-old son's school in February telling her that he killed himself in the school bathroom, she was mystified, as Luie Fields was a happy kid. But like so many teens who may not realize they are risking their lives when playing games like "leap frogging," "daring drinking," and extreme selfie games, some pay the ultimate price. Was Luie playing the "chocking game" - a game that is suspected to be behind hundreds of deaths in the past decade? Elizabeth Vargas reports on teenagers who risk it all.

"20/20" is anchored by Elizabeth Vargas and David Muir. David Sloan is the senior executive producer.