He meets women. He gains their trust. He kills them. That's all London police detective Maeve Kerrigan knows about the man she is hunting. Three women have been strangled in their homes, and it appears to be the work of the same sadistic killer. With no sign of break-ins, every indication shows that the women let their attacker in willingly. The victims' neighbors and friends don't seem to remember anything unusual or suspicious, and Maeve is almost at a loss about how to move forward with the investigation.
Then the evidence starts to point to a shocking suspect: DCI Josh Derwent, Maeve's partner on the police force. Maeve refuses to believe he could be involved, but how well does she really know him? Secrets Derwent has long kept locked away are coming back to haunt him, and the more Maeve learns about her partner's past, the more difficult it is to dismiss him as a suspect. After all, this is hardly the first time Derwent's been accused of murder.
Jane Casey returns with her most outstanding novel yet in The Stranger You Know, a taut thriller and an intimate portrayal of complicated, all-too-human characters.
Maeve Kerrigan and her colleagues pursue "the Gentleman Killer," who poses his victims' corpses in pristine white on beds of flowers, in Casey's exciting if flawed fourth police procedural featuring the London detective constable (after 2012's The Last Girl). For Kerrigan, the case hits dangerously close to home, both because of her kinship to the victims, who are also attractive, single, professional women, and because of the eerie similarities to the murder of 15-year-old Angela Poole two decades earlier, in which the prime suspect was none other than Kerrigan's own infuriatingly sexist but often inspired partner, Det. Insp. Josh Derwent. Torn between conflicting loyalties, Kerrigan is tested even further when it starts to look as if she might be turning into a target herself. With its vibrant cast of characters, not least of them the feisty but fragile Kerrigan, this page-turner should reward series fans and newcomers alike right up until the disappointing deus ex machina denouement.