Per an Amazon reviewer:
This book is one of the hardest to find out of all of Delacorta's Gorodish and Alba novels. It's no wonder, too, this one is probably the best I've read so far! In it, Alba is kidnapped by a man with a fantasy about mating like the dragonflies do, and all Gorodish knows about her kidnappers is that they were driving a white Rolls Royce. He ends up having to steal every white Rolls in Paris, in hopes of finding the one that belongs to the kidnappers. Once he discovers a man who helped in the kidnapping, he comes up with a very odd but very clever way to get him to reveal everything he knows about it, as Gorodish often does.