The October Man – Ben Aaronovitch

This novella is set in the world of the Rivers of London series, but takes place in Germany, without any of the regular characters making an appearance, except as a passing reference.

Tobias Winter is Germany’s version of Peter Grant, and we get to follow a case of his. We get to meet some different Rivers, and see some particularly German attitudes toward magic, and how it’s starting to become more common again. It’s a fun side story.