Ten Little Wizards

In this book, Kurland took over with remarkable aplomb the alternative history scenario and characters created by his late friend Randall Garrett, and proceeded to introduce new characters and background details, while maintaining Garrett's existing regular characters.

The generous amount of background detail gives a satisfying sense of immersion in this 20th-century Anglo-French Empire; the characters are varied and quite well presented.

The crimes in the book seem rather contrived to me, and crime fans may find better material elsewhere; the book will probably appeal more to fans of alternative history.

And also to fans of sf/fantasy: there's a kind of magic that works in this world, although it's a scientific kind of magic and there are limits to its capabilities.