His past. Her future. Can love bring them together in time? Abby's senior year of high school is textbook perfect, until she meets Dante Alexander, a foreign-exchange student from Italy. Time behaves differently when they are together - too fast or slow or seeming to stop. When the band Zero Hour performs at the local hangout, they have a bizarre influence over their audience, and Abby's best friend, Valerie, is caught in their snare. Dante helped Leonardo Da Vinci build a time machine, then was sent 500+ years into the future as punishment when falsely accused of being a traitor. As past and present collide, Abby learns she holds a special power over time itself.

His eyes. His touch. His kiss. Dante was unlike anyone Abby had ever met. Now he’s gone, and Abby will do anything to get him back . . . The hourglass door has closed behind Dante, sending him back in time to hunt down Zo, Tony, and V. When Zo targets Abby's past, she begins building a new time machine "door". With each new change that ripples into her present, Abby's life continues to spiral out of control. As Abby she struggles to free Dante, she receives help from an unexpected - and unlikely - ally.

The only way to rescue the future is to alter the past. When Abby stepped through the hourglass door, leaving her beloved Dante blind and bleeding on the other side, it was in full faith that she could find a way to repair the damage to the river of time and restore him—as well as her family. It was a desperate chance that seemed worth taking. But Zo had other plans. Now Abby is trapped in a full-fledged battle for her own mind and life and heart. Even worse, Zo's evil intent reaches beyond simple revenge against her and Dante. The whole world is in danger of collapsing unless Abby can summon her courage and undertake a journey that will lead her beyond the origins of the hourglass door.

Abby's senior year of high school is textbook She has a handsome and attentive boyfriend, good friends, good grades, and plans to attend college next year. But when she meets Dante Alexander, a foreign-exchange student from Italy, her life suddenly takes a different turn. He's mysterious, and interesting, and unlike anyone she's ever met before. Abby can't deny the growing attraction she feels for him. Nor can she deny the unusual things that seem to happen when Dante is around. Time behaves differently when they are together—traveling too fast or too slow or sometimes seeming to stop altogether. The Hourglass Door When the band Zero Hour performs at the local hangout, Abby realizes that there's something dangerous about the lead singer, Zo, and his band mates, Tony and V. Oddly, the three of them are also from Italy and have a strange relationship to Dante. They also hold a bizarre influence over their audience when performing. And Abby's best friend,...