Tyler Hadley, a 17-year-old high school dropout from Port St. Lucie, Fla., allegedly bludgeoned his parents to death with a hammer, according to police.
He then invited dozens of friends via Facebook to a house party while the bodies of Blake and Mary Jo Hadley lay upstairs in a bedroom, police say.
Acting on an anonymous tip, officers visited the home Sunday and Tyler initially told them his parents were out of town, says Capt. Don Kryak.
Police entered the house and stunningly found the bodies in the locked master bedroom on the floor, partially covered with towels, books and files.
A hammer believed to be the murder weapon used by Tyler Hadley lay between them. "It was a merciless killing," says Kryak, stating the obvious.
As for the party, as many as 60 people Tyler invited via Facebook showed up, and the bash went from about 9 p.m. until the early hours of Sunday.
"He had the party after the homicides took place," says Kryak.
It was not known if any attendees saw the bodies, but a rumor started that Tyler killed his parents, and a tip thankfully made its way to the police.
Unlike with Casey Anthony, we don't see a surprise acquittal here.