The complete Gone Trilogy is a USA Today bestselling title.

One poor decision will haunt her forever. 
Macy Mercer only wants a little independence. Eager to prove herself grown up, she goes to a dark, secluded park. She's supposed to meet the boy of her dreams who she met online. But the cute fifteen year old was a fantasy, his pictures fake. She finds herself face to face with Chester Woodran, a man capable of murder. 
Distraught over his own missing daughter, Chester insists that Macy replace his lost girl. He locks Macy up, withholds food, and roughs her up, demanding that she call him dad. Under duress from his constant threats and mind games, her hold on reality starts to slip. Clinging to her memories is the only way of holding onto her true identity, not believing that she is Chester's daughter. Otherwise she may never see her family again. 
Gone is the first novel in the Gone saga, a trilogy of psychological suspense thrillers. If you enjoy page turning suspense with constant twists and turns, then you'll love this nail-biting read. 

Other books in the series:
Held #2
Over #3
Complete Trilogy
Dean's List
No Return
Girl In Trouble (Alex Mercer #1)