The Lost by Natasha Preston

The Lost follows a story about Piper and Hazel, two best friends who think they can solve the mystery of why teenagers are just up and disappearing from the small town they call home. It's not uncommon for young adults to venture outside the town, but that's not what's happening here. 

Enter Caleb, Owen, Matt, and lastly Evan. The four psychopaths who started the kidnappings. All so they could play a variety of messed up games with their victims. Stripping away at the life and will to live that these people had. Replacing it with fighting to the death, being waterboarded for hours, and a few other things. 

This book had me hooked. The mystery of who and why gnawed at you till the very end. If you decide to give this mystery/thriller a read, I hope you enjoy it as much as I did.

And lastly, remember stranger danger. ☺