Overwhelmed by thoughts that life may be passing her by, Grace Winslow puts her budding career on hold to follow the trail of her great grandmother, who disappeared without a trace in 1929. After checking into the same Paris hotel where her great grandmother was last seen, Grace encounters an enigmatic figure who offers to help … an offer that leads her in directions she never thought possible. In a sci-fi thriller that blends scientific fact with provocative fiction, readers are taken on a wild ride into the world of quantum physics, where the potential for unintended consequences is very real. Intricately layered with remarkable research and detail, the heart-stopping action builds right up to the end, proving once again that bestselling author John Lyman is a master storyteller.