"This series is going from strength to strength."
Local diver, Jude Trellon, is found dead on the rocks close to a notorious cave, Piper's Hole. At first, this looks like a diving death, but soon Kitto realises he is looking at murder. A message has been attached to the dead woman, words from an old sea shanty, and an ancient Roman artefact has been pushed violently down her throat, choking her.
Jude Trellon's death sends shock-waves through the community. She was a beautiful and charismatic woman, but one who also made enemies and one who was prone to risky behaviour, such as diving in the dangerous Piper's Hole. Why was Jude diving there that night? Does this have anything to do with her death, or is the cause more mundane – problems in her relationship with her Swedish husband, marine researcher Ivar, her stormy relationship with her brother, or the resentment of her ex-lover whom she left for the man she is now married to.
Or is the murder linked to valuable finds made when Jude was out diving. There have been rumours for years of a Roman wreck under the seas around the islands. Has Jude located this? The appearance of previously unknown artefacts suggests this may be the case. This would be a secret worth killing for.
Kitto realises quickly that Jude Trellon is not the only victim of this killer and may not be the last. He has to work fast if he is to prevent further deaths, and in this he is hampered by his boss, the bureaucratic and controlling DCI Madron who finds Kitto's independence hard to stomach.