The dream became a nightmare.

The weekend in Mexico sounded like a dream vacation. Four guys, five girls - and a gorgeous oceanside mansion all to themselves. It should have been perfect.

Except nothing was going the way they'd planned. There was the girl upstairs fighting for her life. The phone lines that went dead. And the explosion in the garage that could have killed them all.

But not even that prepared them for what happened next. Because while they were getting some sun, someone else was getting revenge - and the terror wouldn't stop until the weekend was over.