Bitter Harvest (a Finger Lakes Wine Mystery prequel)

"Corey Johnston looked much older than Deville had expected. Corey’s face, pale and sickly, showed skin so tight Deville could almost see the skull beneath."
When Investigator Louis Deville falls into Rochester's Genesee River, a brave, agile woman saves him. To repay his debt, she asks him to investigate the strange goings on at the Blue Manor. As he struggles to keep his personal demons at bay, he faces a new dilemma which may not be an actual case, just yet. But when a new death turns up, he discovers a diabolical plan, and uncovers the truth before another life is lost.
This traditional mystery novel is in the style of Elizabeth George, Charles Todd, and Martha Grimes.