Kate and her identical twin sister, Violet, were born with innate psychic abilities concerning future events and other people’s secrets. Now, years later, their different paths have led them both back to their hometown of St. Louis. When a minor earthquake hits in the middle of the night, the normal life Kate has always wished for begins to shift. She is ultimately forced to reconcile her fraught relationship with her sister and to face truths about herself she has long tried to deny.