The in crowd

On the last Saturday in August, politicos and socialites trade tidbits of gossip and sips of Pimm's under the tasteful bunting of a Richmond garden party. They'd never guess that the police are just a stone's throw away, pulling a body out of the river Thames. The drowning appears to be a tragic accident - until Detective Caius Beauchamp gets an unexpected tip. The victim, it seems, had enemies in high places. Did being on the wrong side of them get her killed?