Henry receives an anonymous crossword puzzle in the mail and initially thinks it's just a prank. When he gets bored, and starts to fill in the puzzle, he begins to recognize the names of people who died under mysterious circumstances; and one clue suggests that another death may soon come. The names in the puzzle lead Henry to an exclusive organization of writers with one subject on their minds: murder! When he teams up with his wife Emmy, there is not a criminal in the world who is safe!