What was meant to be a holiday in Italy turns into the next adventure for Professor Elliot Brand, when he is asked to advise on underwater ruins found in the Mediterranean Sea. But an unknown ancient civilisation is the least of his problems. Traitors, saborteurs and ancient horrors await Elliot Brand and they all lurk hundreds of feet under the surface of the sea.

Set between The Ancestor Trap and The Missing Link this book can also be enjoyed as a standalone novel.