You've Been Warned - James Patterson

Kristin Burns is making her way in New York City. Her photos are being considered at a major Manhattan gallery, she works by day with two wonderful children, and the man of her dreams is almost hers for keeps. But just as everything she's ever wanted is finally within reach, her life changes forever--with one murderous nightmare. Kristin wakes up every morning from the same chilling, unforgettable dream. And suddenly, it's visiting her during the day too. As her life turns stranger by the minute, Kristin is haunted and terrified. Is it all in her head? Or is the nightmare becoming her life? Kristin searches desperately for what's real through the lens of her camera, only knowing two things for sure: that no place is safe and the fate of everyone she loves lies in her hands.