The Henrie O series is a series of cozy mystery novels by American author Carolyn Hart. Henrie O’Dwyer Collins is a retired newswoman who travels the world and solves mysteries everywhere she goes. Henrie is in her 70s, rather tenacious and known for her grit.

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Carolyn Gimpel Hart is an American author of cozy mystery novels, including her Death on Demand and Henrie O series. In 1964, Carolyn won a writing contest for a mystery novel targetted at teenage girls. She then wrote YA mysteries until 1972. For the next 15 years, she would write standalone suspense titles, as publishers […]

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