The Masked Truth

The Masked Truth by Kelley Armstrong, 340 pages

“Tricked by a former friend into canceling a date and filling in as a babysitter, teenage Riley could never imagine the fear that now haunts her. A witness to the double murder of the parents of her young charge, Riley can't shake her memories of that evening, especially since she was little help to the police investigators. She agrees to attend a therapy weekend, only for terror to intrude again when kidnappers break into the building and murder both counselors and teen attendees.”  This was a crazily convoluted mystery and I loved it.  It was terrifying pretty much from beginning to end, because the end game was hidden well enough that it was hard to figure out much before the characters do.  This is definitely a good choice for teens that like thrillers