London pubs are meant to be safe places where anyone can sit quietly with a drink, but not anymore One night, Arthur Bryant sees a drunk middle-aged lady coming out of a pub in a London backstreet. The next morning, she is found dead at the exact spot where their paths crossed. There's a bizarre twist; the street itself appears to have changed, for Bryant is convinced that he saw the public house as it looked over a century before. The elderly detective has already lost the funeral urn of an old friend. Could it be that he's losing his mind as well? It becomes clear that a number of other women have lost their lives in London pubs. A silent, secret killer is at work, striking in full view...and yet nobody has a clue how or why, or where he'll attack next. The likeliest suspect seems to be a mental patient with a reason for killing. But knowing who the killer is and catching him are two very different propositions. As they send their new team out on the hunt for a madman, the octogenarian detectives of the Peculiar Crimes Unit prepare themselves for the pub crawl of a lifetime, and come face to face with their own mortality