Bodies of Water — J.S. Borthwick

Sarah Dean, self-described "accident crime-prone English teacher," and her boyfriend, Dr. Alex McKenzie, are longing for a vacation. No classes, students or conferences for her-no patients, beepers or night calls for Alex.

The two-week cruise aboard the Pilgrim, a luxury yacht owned by millionaire evangelist David Mallory, seems the perfect gateway...until one of the passengers turns up murdered...and those left on board are now both suspects and potential victims.

Could the killer be the eccentric Mallory? His stern secretary Gracie (also sister of the victim)? The voluptuous chef, Andrea Elder? Ezra, the deckhand? Or even Sarah's younger brother Tony, the other member of the crew? Sarah and Alex must find out quickly, or they could become the next victims...