When Ben Hammond reluctantly embarks on a pensioners’ coach tour, he is surprised to find that he has met one of his fellow passngers before. It is Miss McGuire, his former maths teacher…and she is acting rather strangely. On the journey home, Ben realises that Miss McGuire is no longer on the bus, but when he is told she stopped to visit her sister, alarm bells start ringing: Miss McGuire had no sister.
Ben is compelled to investigate and, when he does, he unearths all manner of dark secrets. Suspicious characters lurk in the gloom of the Full Moon Inn and, at a nursing home not far from the coach’s route, elderly people are disappearing….