Sweet Caress by William Boyd, book review: The novelist's new mystery is his best in years

I don't recommend looking up Sweet Caress + photos on your search engine. It starts off harmlessly enough with kittens and horses but rapidly deteriorates. My excuse is that I was trying to find the origin of the pictures William Boyd uses in this latest novel. His subject, Amory Clay, is a photographer at a time when it was not an altogether respectable career for a woman (the character is born in 1908).