A luminous novel of love, loss, science, and art, that asks if the past can ever be truly revisited, and at what cost? In the beginning, there was happiness. Maya, an artist obsessed with the nature of beauty, and Noah, a quantum physicist preoccupied by the mysteries of the universe, found in each other a shared curiosity about the world. But beneath the surface of their happy marriage is a third Serena, the lost child that Noah had with his ex-wife, Eileen. One day Noah gets a call from an eccentric billionaire, asking him to participate in a clandestine project aiming to unravel the secrets of time and consciousness. The couple agrees to relocate to the Janus Lab, deep in the desert, where Noah finds himself drawn into a dangerous kind of time travel that could result in seeing Serena again. As Noah delves into this groundbreaking, fringe work, his past begins to overtake him. And when his ex-wife, Eileen, joins the project, Maya embarks on a journey back to her own past, one that takes her to Japan, to her family, and to a formative lover who once shattered her heart. As Noah, Maya, and Eileen grapple with the balance between holding on and letting go, new information emerges that the Janus Lab might not be exactly what it seems. A heart-achingly moving novel, Lightbreakers plumbs the mysteries of human connection, and explores how to love in a world where time is both a healer and a thief.