Farthing

Spoiler warning. I could not put this book down for long after I got about a third into it. starting as an alt history book, it becomes a murder mystery soon, only to turn into a warning about fascism towards the end.

I found myself wishing for the longest time that it would still find a happy ending somehow, but alas. And it isn't even Herr Hitler's fault.

Definitely going to pick up the other books in the series.