When Sierra wakes up on her eighteenth birthday in a stranger's house, with no memory of how she got there, she knows her life is spiraling out of control. Someone is causing her to have blackouts that make no sense. Someone is playing tricks on her mind. It's time to admit the truth-she's really scared.And feeling like she wants to disappear.Racing home on her Triumph motorcycle, Sierra finds her best friend Violet has planned a surprise party for...