Mystery reference
Historical Noir: The Pocket Essential Guide to Fiction, Film & TV (2018) by Barry ForshawI know that historial crime fiction is a popular sub-genre now. I enjoy reading that type of novel. But I was surprised at how many authors write that sort of mystery. And the book does not cover every author in that area, of course. My favorite sections cover the early 20th century through the 1950s. There is a good overview of this book at Crime Fiction Lover, if you are interested. And a very interesting post at the Rap Sheet, with lots of details and an interview with the author.
Historical Fiction

This is a dark comedy, beautifully told, very moving. Noel Bostock, aged 10, is evacuated from London to escape the Nazi bombardment, shortly after the death of his godmother, with whom he had been living. He is assigned to Vera Sedge, a small time con artist, mostly unsuccessful.
Transcription (2018) by Kate Atkinson
I wasn't quite sure what category this fits in. I consider it spy fiction; the New Yorker refers to it as a "spy novel." But on Goodreads it is overwhelmingly shelved as Historical Fiction. It doesn't matter. I loved the book, I am sure it will be one of my top reads this year. The story is set in 1940 and 1950, with a brief framing story in 1981.
Post-apocalyptic Fiction
Station Eleven (2014) by Emily St. John MandelThe apocalyptic event in this story is the Georgia Flu, a strain of the swine flu that wipes out 99% of the world's population. The story is set primarily in Toronto, Canada and northern Michigan. My thoughts on the book are here.
Crime Fiction
My Mother, the Detective: The Complete Mom Short Stories (1997)by James Yaffe
The eight short stories in this book were originally published in Ellery Queen's Mystery Magazine, between 1952 and 1968. They are a lot of fun. Dave, a policeman, visits his mother every week and over dinner they discuss one of his cases.
Friends and Traitors (2017) by John Lawton
This is the 8th book in the Inspector Troy series, one of my favorite series. The novels are a mix of police procedural and espionage, and are set between 1934 and 1963, with many of them covering multiple timelines. This one is set in 1958, but does have flashbacks to earlier times.

London Rules (2018) by Mick Herron
This is the 5th book in Herron's Slough House series about spies who have been demoted due to some disgrace or screw up in their jobs, and are now working under Jackson Lamb. I have liked each book in the series more than the last.
Out of the Deep I Cry (2004) by Julia Spencer-Fleming
This is the 3rd book in a series featuring Clare Fergusson, an Episcopal priest, and Russ Van Alstyne, the police chief of Miller's Kill, New York. This time the story features two timelines, one in the present and one that starts in the 1920's during Prohibition. This is another series that gets better with each book I read.
Perfect Gallows (1988) by Peter Dickinson
A story about a murder that occurs in 1944 on an estate in the UK; the estate is occupied by US forces preparing for the invasion of France. See my thoughts here.