Three adult siblings find their family thrown into disarray when their recently widowed mother, Vivien, declares she is in love with a new man. The tension his presence creates threatens to drag the whole family towards tragedy, and perhaps crime.

Set in London, where gratification is only an app away, the story centers on Arabella, a carefree, self-assured Londoner with a group of great friends, a boyfriend in Italy, and a burgeoning writing career. But when her drink is spiked, she must question and rebuild every element of her life.