Obsessively watching a breakfasting couple every day to escape the pain of her losses, Rachel witnesses a shocking event that inextricably entangles her in the lives of strangers.

A businessman is caught up in a criminal conspiracy during his daily commute home.

It all happens so quickly. One day you're living the dream, commuting to work by ferry with your charismatic neighbor Kit in the seat beside you. The next, Kit hasn't turned up for the boat and his wife, Melia, has reported him missing. When you get off at your stop, the police are waiting. Another passenger saw you and Kit arguing on the boat home the night before and the police say that you had a reason to want him dead. You protest. You and Kit...

Nobody ever talks to strangers on the train. It's a rule. But what would happen if they did? From the New York Times bestselling author of The Authenticity Project, a heartwarming novel about unexpected friendships and the joy of connecting. Every day Iona, a larger-than-life magazine advice columnist, travels the ten stops from Hampton Court to Waterloo Station by train, accompanied by her dog, Lulu. Every day she sees the same people, whom she knows...