When Libby arrives in London broken-hearted, the first person she meets is pensioner Frank. He tells her about the time in 1962 he met a girl on the bus. They made plans, but Frank lost her number. For the past 60 years, he's ridden the same bus trying to find her. Libby decides to continue the search. But with Frank's dementia progressing, their chance of finding the girl on the 88 bus is slipping away. For fans of Jojo Moyes.