In the exhilarating penultimate thriller of the New York Times and #1 internationally bestselling Department Q series, the team must hunt for a nefarious criminal who has slipped under the radar for decades. On her sixtieth birthday, a woman takes her own life. When the case lands on Detective Carl Mørck's desk, he can't imagine what this has to do with Department Q, Copenhagen's cold cases division since the cause of death seems apparent. However, his superior, Marcus Jacobsen, is convinced that this is related to an unsolved case that has been plaguing him since 1988. At Marcus's behest, Carl and the Department Q gang-Rose, Assad, and Gordon- reluctantly begin to investigate. And they quickly discover that Marcus is onto something: Every two years for the past three decades, there have been unusual, impeccably timed deaths with connections between them that cannot be