Jussi Adler-Olsen’s New York Times and #1 internationally bestselling Department Q series continues, introducing an intriguing new member to the Department Q team . . .

Former head of Department Q Carl Mørck has retired. That was the plan, at least. So when he comes across a disturbing audio recording, he turns it over to his former colleagues, who are struggling to keep the old department up and running on their own. That is until a new transfer unexpectedly arrives—Helena Henry, a Frenchwoman who throws herself into the investigation with gusto . . . but who may also have secrets of her own.

When the team realizes that the audio recording might shed new light on a supposedly open-and-shut murder-suicide case from years earlier, suddenly everything they thought they knew is called into question. Meanwhile, a spurt of seemingly random violence—an explosion off the coast of Jutland, a young woman shot dead in Copenhagen—leads the Department Q team to investigate a possible connection to a different long-ago dark and sinister event, one that someone has never forgotten.