The Butterfly House

In this chilling Nordic noir thriller set in Copenhagen, detectives Jeppe Kørner and Anette Werner investigate a series of brutal murders tied to a hospital, blending psychological suspense, police procedural, and dark social commentary in this sequel to the #1 international bestseller The Tenant that is “brimming with personality, eccentric characters, and plenty of mystery and intrigue” (Crime by the Book).

Hospitals are places of care—or so it seems. In the coronary unit of a leading Copenhagen hospital, a nurse quietly administers a fatal overdose to an elderly patient.

Days earlier, a paperboy makes a gruesome discovery in the heart of the city: the nude body of a young woman in a fountain, her arms marked by precise incisions, her body completely drained of blood.

Detective Jeppe Kørner, navigating the aftermath of divorce and a fragile new relationship, takes the lead. His partner, Anette Werner—on maternity leave but unwilling to stay sidelined—begins her own unofficial investigation. But working outside the system draws her into increasingly dangerous territory.

As the case unfolds, Jeppe and Anette uncover a horrifying pattern of exploitation and control lurking within caregiving institutions. What they find is as unsettling as it is deadly—and far closer than they ever imagined.

A “thrillingly nerve-racking” (Shelf Awareness) Scandinavian crime novel, this gripping installment delivers a dark, atmospheric mystery exploring power, vulnerability, and the chilling consequences of misplaced trust.