Slaying is such sweet sorrow

"Catherine Penny is stunned when her talented son-in-law, Peter, is passed over for a prestigious appointment at Oxford University in favor of a pompous womanizer, who turns up dead, with Peter the prime suspect in his murder."
"Catherine Penny is stunned when her talented son-in-law, Peter, is passed over for a prestigious appointment at Oxford University in favor of a pompous womanizer, who turns up dead, with Peter the prime suspect in his murder."@en
"File "M" for Murder Librarian and former New Yorker Catherine Penny has already sleuthed out the truth behind a deadly house fire since settling in the tiny English town of Far Wychwood. But nowhere is too far for painful memories to find her when her ex-husband, who left her single in her sixties, arrives with his new lady love to attend a family affair. Catherine can't avoid him at the awards ceremony honoring their son-in-law, Peter, who is a shoo-in for a prestigious appointment at Oxford's Mercy College. But the shock of Peter not being chosen is matched only by who is: pompous, womanizing scholar Edgar Stone. And when Stone is found murdered, Peter's guilt seems hardly academic... Patricia Harwin, who introduced a "charming, compassionate" (The New Mystery Reader) heroine in Arson and Old Lace, shows once again why an American woman in an English town can unearth a whole lot of trouble."@en