The Abominable Man: Sjowall, Валё

The seventh book in the classic Martin Beck detective series from the 1960s and 70s - the novels that shaped the future of Scandinavian crime writing.
Hugely acclaimed, the Martin Beck series were the original Scandinavian crime novels and have inspired the writings of Stieg Larsson, Henning Mankell and Jo Nesbo.

On a quiet night a high-ranking police officer, Nyland, is slaughtered in his hospital bed, brutally massacred with a bayonet. It's not hard to find people with a motive to kill him; in fact the problem for Detective Inspector Martin Beck is how to narrow the list down to one suspect. But as he investigates Nyland's murder he must confront whether he is willing to risk his life for his job.