From the international bestselling author, Hans Olav Lahlum, comes Chameleon People, the fourth murder mystery in the K2 and Patricia series. 1972. On a cold March morning the weekend peace is broken when a frantic young cyclist rings on Inspector Kolbjorn 'K2' Kristiansen's doorbell, desperate to speak to the detective. Compelled to help, K2 lets the boy inside, only to discover that he is being pursued by K2's colleagues in the Oslo police. A bloody knife is quickly found in the young man's pocket: a knife that matches the stab wounds of a politician murdered just a few streets away. The evidence seems clear-cut, and the arrest couldn't be easier. But with the suspect's identity unknown, and the boy refusing to speak, K2 finds himself far from closing the case. And then there is the question that K2 can't get out of his head: why would a guilty man travel directly to a police detective from the scene of his own brutal crime?

A gripping, evocative, and ingenious mystery which pays homage to Agatha Christie, Satellite People is the second Norwegian mystery in Hans Olav Lahlum's series. Oslo, 1969: When a wealthy man collapses and dies during a dinner party, Norwegian Police Inspector Kolbjorn Kristiansen, known as K2, is left shaken. For the victim, Magdalon Schelderup, a multimillionaire businessman and former resistance fighter, had contacted him only the day before, fearing for his life. It soon becomes clear that every one of Schelderup's 10 dinner guests is a suspect in the case. The businessman was disliked, even despised, by many of those close to him; and his recently revised will may have set events in motion. But which of the guests – from his current and former wives and three children to his attractive secretary and old cohorts in the resistance – had the greatest motive for murder? With the inestimable help of Patricia – a brilliant, acerbic young woman who lives an isolated life at home, in her wheelchair – K2 begins to untangle the lies and deceit within each of the guests' testimonies. But as the investigators receive one mysterious letter after another warning of further deaths, K2 realizes he must race to uncover the killer, before they strike again

The third mystery in the hugely compelling, bestselling international crime series from Norway's answer to Agatha Christie, Hans Olav Lahlum, The Catalyst Killing will have you guessing to the final clue. The first murder was only the spark… 1970: Inspector Kolbjorn Kristiansen, known as K2, witnesses a young woman desperately trying to board a train only to have the doors close before her face. The next time he sees her, she is dead… As K2 investigates, with the help of his precocious young assistant Patricia, he discovers that the story behind Marie Morgenstierne's murder really began two years ago, when a group of politically active young people set out on a walking tour in the mountains. There, one night, the party's charismatic leader – and Marie's boyfriend – Falko Reinhardt vanished without a trace. But were the relationships between this group of friends and comrades all they appeared to be? What did Marie see, that made her run for her life that day? And could both mysteries be linked to Falko's research into a cell of Norwegian Nazis he suspected may still be active? It soon becomes clear that Marie's death is not only a complex case in its own right, but will act as a catalyst in a dark set of events which will leave K2 and Patricia confronting their most dangerous and explosive investigation yet. And as the pair works hard to unravel the clues before Marie's killer can strike again, the detective fails to notice that his young assistant has her own problems to face

Oslo, 1968: ambitious young detective Inspector Kolbjorn Kristiansen is called to an apartment block, where a man has been found murdered. The victim, Harald Olesen, was a legendary hero of the Resistance during the Nazi occupation, and at first it is difficult to imagine who could have wanted him dead. But as Detective Inspector Kolbjorn Kristiansen (known as K2) begins to investigate, it seems clear that the murderer could only be one of Olesen's fellow tenants in the building. Soon, with the help of Patricia – a brilliant young woman confined to a wheelchair following a terrible accident – K2 will begin to untangle the web of lies surrounding Olesen's neighbors; each of whom, it seems, had their own reasons for wanting Olesen dead. Their interviews, together with new and perplexing clues, will lead K2 and Patricia to dark events that took place during World War II. This gripping, evocative, and ingenious mystery – the first in a series featuring K2 and Patricia – pays homage to the great Agatha Christie and will plunge readers into Norwegian history, and into a world of deceit and betrayal, revenge, and the very darkest murder