In 1967, four female scientists worked together to build the world's first time machine. But just as they are about to debut their creation, one of them suffers a breakdown, putting the whole project--and future of time travel--in jeopardy. To protect their invention, one member is exiled from the team--erasing her contributions from history. Fifty years later, time travel is a big business. Twenty-something Ruby Rebello knows her beloved grandmother, Granny Bee, was one of the pioneers, though no one will tell her more. But when Bee receives a mysterious newspaper clipping from the future reporting the murder of an unidentified woman, Ruby becomes obsessed: could it be Bee? Who would want her dead? And most importantly of all: can her murder be stopped?