Hourglass Door Series by Lisa Mangum

His past. Her future. Can love bring them together in time?Abby's senior year of high school is textbook perfect: 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... moreHis past. Her future. Can love bring them together in time?Abby's senior year of high school is textbook perfect: 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. 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, Valerie, is caught in their snare. Dante tells Abby the truth of his past: he once worked for Leonardo Da Vinci, helping to design and build a time machine. When Dante was falsely implicated as a traitor to his country, he was sent through the machine more than five hundred years into the future as punishment. As the past and the present collide, Abby learns that she holds a special power over the flow of time itself. She and Dante must stop Zo from opening the time machine's door and endangering everyone's future. More than one life is at stake and Abby's choice could change everything. less

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. Abby knows that Dante, as a Master of Time, is the only one who can stop them from destroying time itself. She also knows that he will need her help... moreHis 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. Abby knows that Dante, as a Master of Time, is the only one who can stop them from destroying time itself. She also knows that he will need her help. But almost immediately, things start to change, and Abby’s worst fears are realized when Zo begins targeting her past specifically. As Abby’s world fractures around her, she must face a terrible truth: either Dante didn’t make it through the door, or he is lost forever. So with Dante’s blueprints in hand, she begins construction on a new door, a new time machine that will either save Dante—or doom him. With each new change that ripples into her present, Abby s life continues to spiral out of control. Her relationships with Jason, Natalie, and even her family are threatened to the breaking point—and beyond. Zo’s power is greater than Abby ever imagined, but as she struggles to free Dante, she receives help from an unexpected—and unlikely—ally. less

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... moreThe 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. less