Cold Quarry (Thorndike Press Large Print Mystery Series)

When master falconer Chester Carew is found dead in the woods, private investigator Frank Pavlicek doesn't buy the official report of an accidental shooting. Hunting for clues, Frank stumbles across evidence of a toxic agent contaminating the area - something the authorities refuse to discuss. The trail leads to a shadowy group of domestic terrorists - and to Frank's former NYPD partner, Jake Toronto, who is accused of being involved with their plot.