Every criminal has his own handwriting, but only Sebastian Bergman can read it. Bergman is Sweden's most famous criminal profiler, having written a definitive, best-selling book about the workings of the criminal mind. He's played by Swedish actor Rolf Lassgard, famous for his performance as the original Wallander, based on Henning Mankell's wildly popular crime novels. Bergman is strong-headed, politically incorrect, intuitive, abrasive - and grief-stricken. He's struggling to come to terms with the loss of his wife and young daughter from the 2004 tsunami in Thailand, an event that caused his life to careen out of control. Returning to work, Bergman had one more surprise waiting for him - an adult daughter he never knew he had, now working alongside him as a fellow investigator in the Stockholm police department.