Broken Harbor, Tana French

Excellent 4th book in French's Dublin Murder Squad series. Set in a lonely, half-built "luxury estate" on the coast, Detective "Scorcher' Kennedy is faced with a gruesome crime in a place that has it's own harrowing memories for him.
So well done- the mix of psychological thriller and police procedural is brilliantly done, and her in-depth characterizations are wonderful.

The Vault, by Peter Lovesey

Excellent and atmospheric procedural set in (and under) Bath. Well plotted, with ties to both the history of Bath and also to the novel Frankenstein, which has surprising links to the area- this was very satisfyingly done.