Scotland Yard's Murder Squad Books in Order

Former sergeant Nevil Hammersmith has opened a tiny detective agency, but his only real case is finding his missing friend Walter Day. As Jack the Ripper resurfaces and secret societies close in, London becomes a trap neither man may escape.

In spring 1890, a killer dubbed the Harvest Man hides in attic spaces, dropping into bedrooms at night to mutilate his victims. Inspector Walter Day, still scarred by his encounter with Jack the Ripper, must face both predators at once.

When a shadowy vigilante group engineers a mass breakout from a London prison, four notorious murderers slip into the city, possibly including Jack the Ripper. Walter Day and Nevil Hammersmith race to catch them before grief-stricken Londoners take justice into their own hands.

Constable Colin Pringle cannot stop thinking about the young woman pulled from an October canal, her skin turned an uncanny shade of blue. Following the trail behind her arranged marriage leads him into a case that challenges everything he believes about the world.

Day and Hammersmith are dispatched to a collapsing coal town in the Midlands after a prominent couple and their child vanish. As illness spreads, sinkholes open, and a human eye turns up in a bird's nest, the Murder Squad uncovers secrets the village would rather bury.

In the grim aftermath of Jack the Ripper, Scotland Yard forms a new Murder Squad of just twelve detectives. New recruit Walter Day is assigned the murder of a fellow inspector and, with forensic pioneer Dr. Bernard Kingsley, uncovers a killer targeting the police themselves.