THE NO. 1 INTERNATIONAL BESTSELLING AUTHOR27 MILLION BOOKS SOLDWINNER OF THE GLASS KEY AWARDIn the penultimate thriller in the New York Times and #1 internationally bestselling Department Q series, Copenhagen's cold cases division must hunt for a nefarious criminal who has slipped under the radar for decades.On her 60th birthday, a woman takes her own life. When the case lands on Detective Carl Morck's desk, he can't imagine what this has to do with Department Q, Copenhagen's cold cases division. It's a tragedy to be sure, but the cause of death seems to be clear. But his superior, Marcus Jacobsen, is convinced that this is not in fact a suicide, but a murder related to an unsolved case that has been plaguing him since 1988.At Marcus' behest, Carl and the Department Q gang-Rose, Assad, and Gordon-reluctantly begin to investigate. However, they quickly discover that Marcus is on to something: Every two years for the past three decades, there have been unusual, impeccably timed deaths wi