WINTERHILL Thomaston author Christopher Fahy is a man of many writing talents — fiction, nonfiction and poetry. “Winterhill” is his 14th novel, after last year’s “Foreverglades.” And while Foreverglades was a hilarious spoof about the Fountain of Youth, this book is a dark, suspenseful tale of fraud, deceit, greed and murder. Fahy spins a gripping yarn here, starkly revealing how desperate people can fall victim to the medical quackery and slick promotion of shysters and nutcases.