Maybe it will be better as a movie, but I'm not paying to find out.
A re-read. Moggach is one of my favourite authors, up there with Atwood and Smiley for wry, relevant observation. This is an odd subject for here - more what I would expect from the likes of Rose Tremain - based on the economic bubble created by trading in tulip bulbs in 17C Holland. Full of nuggety...