The Third Rule of Time Travel

Scientist Beth Darlow has discovered the unimaginable. She’s built a machine that allows human consciousness to travel through time—to any point in the traveler’s lifetime—and relive moments of their life. An impossible breakthrough, but it’s not perfect: the traveler has no way to alter or control the outcome. They can only observe.

After Beth’s husband, Colson, the co-creator of the machine, dies in a tragic car accident, Beth is left to raise Isabella—their only daughter—and continue the work they started. Mired in grief and threatened by her unscrupulous funder, Beth pushes herself to the limit to prove the value of her technology.

With each new observation she makes, her own timeline begins to warp. The changes are small at first. Then they become horrifying.

With her reality constantly shifting, Beth is on the clock to reverse altered history. But once the dominoes have been tipped, can they ever be reset?