A body shows up in the ice melt of a glacier, and a retired Reykjavik police detective starts to try again to finish out a long-unsolved case, in Arnaldur Indridason's The Darkness Knows.
Indridason is one of my favorite crime writers, not just one of my favorite Scandinavian authors. His Erlendur novels, beginning with Jar City, are all strong.
This is the second novel featuring Konrad, the retired detective, following on The Shadow District. Some of his own sometimes troubling backstory comes out more in this one, and a third seems likely in the offing as his father's murder (a part of both novels) still remains unsolved at the end.
The Darkness Knows is a very solidly-assembled puzzle with interesting characters and situations, and that dash of inky blackness known to fans of Scandinavian noir.
I got this from New Castle-Henry County Public Library and read it steadily.