A Grid for Murder — Casey Mayes

Savannah Stone makes her living creating puzzles for logic lovers. But when a novice puzzle maker's number is up, Savannah has to fill in the blanks to solve a murder...

Savannah would almost rather drink poison than have tea with Joanna Clayton. Not only is the unpleasant woman one of the worst gossips in Asheville, North Carolina, over tea she flaunts her new assignment creating logic puzzles for a local newspaper -- one that has repeatedly turned down Savannah's work.

But when Savannah's retired police chief husband, Zach, calls her later to tell her Joanna has actually been poisoned, she is more than puzzled -- she's troubled. Will the police consider puzzle envy a strong enough motive and think she decided to eliminate the competition? It's time for Savannah to sort through Joanna's long list of enemies to find out who was bitter enough to poison the prospective puzzle maker...