Fate you will probably like this book series.
The author is Simon Scarrow. He writes historical novels.
I am reading a three book series now of his now.
Blackout
Dead of Night
Death in Berlin.
The books take place during the time of Nazi Germany.
It is about a detective who works in Berlin. He investigates a serial killing.
Good read with twists and turns. More than mystery because of the backdrop and politics.
If you like this style, I recommend Phillip Kerr and his Bernie Gunther series. Kerr was a British author as well. 'March Violets' is the first book in the series.