Colour Scheme (Roderick Alleyn Series #12)

Colour Scheme is set during World War II at a mud-baths resort in rural New Zealand run by Colonel Claire, a tremendously nice fellow and a disastrously bad businessman. His business is on the brink of being taken over by a local blowhard who may be a Nazi spy. Inspector Alleyn has been sent to the resort to sort things out. But he’s in disguise, and even the canniest readers will have trouble picking him out from the resort’s motley cast of characters.