Kith and Kin (A Henry Johnstone 1930s Mystery)

1928. When two bodies are found washed up in the Kentish marshes, DCI Henry Johnstone and DS Mickey Hitchens recognize one of them as being a known associate of one of the East End's most notorious gangsters. But what were the victims doing in this remote and desolate spot? Is it a set-up? A revenge attack? Or something even more sinister?