I’m not only a fan of Swedish mysteries, I also have affinity for the Scandinavian country thanks to hosting an exchange student years ago. While that relationship remains strong, it has no connection to the often dark tales involving murder and deceit.
Knock Knock by Anders Roslund reintroduces readers to criminal detective Ewert Grens. Seventeen years earlier Grens found a five-year-old girl as the lone survivor of a mass shooting in the family home that included her parents and two siblings.
Now, nearing retirement age, Grens discovers someone has broken into the same house. He’s convinced someone is looking for the girl, long ago given a new name as part of witness protection, and fears her life may be in danger.
A parallel narrative involves Piet Hoffman, a former police informer, whose life and family are threatened. Eventually the two plotlines intersect as several execution-type murders take place, similar to the one Grens investigated all those years ago.
Grens is an ill-tempered loner and long-time widower. That he has a soft side, albeit one rarely seen, is no surprise. By contrast, Hoffman is a devoted family man despite his past. The two are intelligent and complement one another. Their association goes back years to Hoffman’s informant days, but suggesting Grens is pleased to reconnect is far from the truth.
Knock Knock is just the kind of Swedish mystery that hooks me: vivid descriptions of Sweden, in this case Stockholm, a fast-paced narrative and interesting characters with often-imperfect moral codes.
Knock Knock
Four-and-a-half Bookmarks
G.P. Putnam’s Sons, 2021
438 pages
The Blue Page Special 
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