A Greek gangster arrives in Stockholm, only to be murdered in a macabre fashion at Skansen zoo, his body consumed by animals. Three cases, one team of detectives and an investigation that will take them across Europe and back through history as they desperately search for answers, and the identities of their killers.

Two of Sweden's most powerful businessmen have been murdered. In the face of panic amongst the financial elite, a task force is created to catch the culprit before he kills again. To his surprise, Detective Paul Hjelm, currently under investigation for shooting a man who took a bank hostage, is summoned to join the team.

Detective Paul Hjelm and his team receive an urgent call from the FBI. A murderer whose methods bear a frightening resemblance to a serial killer they believed long dead is on his way to Sweden.

After the disastrous end to their last case, the Intercrime team - a specialist unit created to investigate violent, international crime - has been disbanded, their leader forced into early retirement. The six officers have been scattered throughout the country. Detectives Paul Hjelm and Kerstin Holm are investigating the senseless murder of a young football supporter in a pub in Stockholm, Arto Soderstedt and Viggo Norlander are working on mundane cases, Gunnar Nyberg is tackling child pornography while Jorge Chavez is immersed in research. But when a man is blown up in a high-security...