The Mark of Eden — Nancy Jill Thames

After a frantic call from a couple on their honeymoon, Jillian returns to Half Moon Bay to help. Two elderly men have been found dead in their recliners, and now another man is missing -- the distraught father of the bride - Jillian's personal assistant. Their investigation must be incognito since the groom is a detective and can't work on the case due to conflict of interest. The clues the threesome find lead Jillian and Teddy to take a cruise to Catalina Island, but it's only an entree into a strange clinical world, where she almost becomes a victim herself before she identifies who is responsible for a bizarre series of deaths. Will Teddy be in time to save the day?