When Kathleen 'Kick' Kennedy left London four years ago, Europe was facing war and Billy Cavendish, the man she loved, had told her he could never marry her. Now, as London stands a shell of its former self, Kick returns to volunteer with the Red Cross, determined to do what she can for the city that holds a part of her heart, and to reconnect with Billy - despite what London society thinks of her. For Lady Brigid Guinness, life is unrecognisable. She has swapped dinner parties, social engagements and high fashion for long shifts as a nurse helping wounded soldiers. And the only person she can really talk to is a man shunned by her inner circle. When Sissy, a young Irish girl, arrives from Wicklow under the care of the Guinness family, she brings her own secrets and all three women begin to realise that in a time of war, friendship might be the only thing they can rely on. A Kennedy Affair is a story of forbidden love, family discord, and how in the worst of times, we can discover the best of ourselves, and each other.