When vampire Clancy Marrowbone returns to Purin province after nearly two years, he intends only to visit with his dear friend, Fanule Perfidor, and find out how his former lover, the unfortunately mortal Simon Bentcross, is faring. But two developments change Marrowbone's itinerary: the appearance of a drastically altered man from his past, and the reawakening of his passion for Simon. Both of these unexpected reunions become increasingly complicated. The connection between Simon's new creation, a bathysphere-like submersible, and a clandestine underwater-research project results in Marrowbone and Bentcross becoming hunted men. But sometimes, it takes danger to make a star-crossed affair seem worth saving.
