A will they, won’t they tale with a jaw-dropping twist at its heart’ Sunday Express Perfect for fans of Sliding Doors. Thea and Isaac have always been friends, despite his constant jokes, despite her stubborn belief in time travel . . . despite the distance between them. But when Isaac returns home from New York when their friend goes missing, suddenly things aren't as they were. Something is different. Thea and Isaac have always been friends. But maybe that wasn't how it was supposed to be.