Grieving her best friend's recent death, neuroscientist Mariana Pineda’s ready to give up everything to start anew. Even her career—after one last week consulting at a top secret particle accelerator. Except the strangest thing happens: a man stops her…and claims they've met before. Carter Cho knows who she is, why she's mourning, why she's there. And he needs Mariana to remember everything he’s saying. Because time is about to loop. In a flash of energy, it’s Monday morning. Again. Together, Mariana and Carter enter an inevitable life, four days at a time, over and over, without permanence except for what they share. With everything resetting—even bank accounts—joy comes in the little moments: a delicious (and expensive) meal, a tennis match, giving a dog his favorite treat. In some ways,...

Grieving her best friend's recent death, neuroscientist Mariana Pineda’s ready to give up everything to start anew. Even her career—after one last week consulting at a top secret particle accelerator. Except the strangest thing happens: a man stops her…and claims they've met before. Carter Cho knows who she is, why she's mourning, why she's there. And he needs Mariana to remember everything he’s saying. Because time is about to loop. In a flash of energy, it’s Monday morning. Again. Together, Mariana and Carter enter an inevitable life, four days at a time, over and over, without permanence except for what they share. With everything resetting—even bank accounts—joy comes in the little moments: a delicious (and expensive) meal, a tennis match, giving a dog his favorite treat. In some ways,...