The Fires of Hell

Jane Webb and Peter Thornton expect a restful voyage home aboard a Mogul supertanker, until anonymous letters start threatening to destroy the ship. As events foretold in the letters begin to happen, suspicion falls on Captain Kenny, his young second wife, his daughter and her husband, chief engineer Arthur Frost. Thornton has to find the writer before the tanker reaches Southampton, where the last threat says it will be blown up.