Showing Dead Man's Puzzle by Parnell Hall

Sherry is off on her honeymoon when Chief Harper comes to Cora Felton, asking her to solve a crossword puzzle found on the body of Old Man Overmeyer. Small problem. Cora is the Milli Vanilli of cruciverbalists. Her niece, Sherry, writes the crossword puzzle column for her.

Cora pokes into Overmeyer's death, hoping to prove he died of natural causes. She learns the cranky hermit was the sole surviving member of a forty-year-old stock pooling agreement, and before she can say "capital gain," the town is full of heirs. Complicating things is Sherry's ex-husband, Dennis, who is playing detective in the hopes of impressing his ex-wife. With Sherry out of town, her restraining order against him is moot, and he is taking full advantage of the fact.
With Dead Man's Puzzle, Parnell Hall delivers another stellar, puzzle-packed entry in his entertaining Puzzle Lady series.