<p>The third mystery in the hugely compelling, bestselling international crime series from Norway's answer to Agatha Christie, Hans Olav Lahlum. <i>The Catalyst Killing </i>will have you guessing to the final clue...<br><br><i>The first murder was only the spark . . . </i><br>1970. Inspector Kolbjørn 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 . . .<br><br>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. <br><br>But were the relationships between
