It wasn’t surprising that the residents of Amy Archer-Gilligan’s Windsor, Connecticut nursing home passed away. After all, many of her boarders were elderly and ailing. What was surprising, though, was that dozens of them died shortly after naming Archer-Gilligan in their life insurance policies, or forking over $1,000 for their care “while they still breathed.” Between 1911 and 1916, at least 48 people died while in Archer-Gilligan’s care – including Archer-Gilligan’s husband. When one of her boarder’s sisters got suspicious and went to the local Hartford Courant, they began to investigate what they later dubbed “the murder factory.” Soon, police began to investigate the trail of bodies in Archer-Gilligan’s wake – and every one they exhumed during their investigation had traces of either arsenic or strychnine. Local shopkeepers confirmed that she purchased large quantities of arsenic “to kill rats,” and police also discovered that she had taken out “sizable insurance policies” on her husband. Archer-Gilligan was arrested and indicted for poisoning five people, including her second husband. While suspected of killing at least 20 people, her lawyer convinced the prosecutor to charge her with only one murder, though. She was convicted, but the state appealed; she was re-tried, pleaded insanity, found guilty and given life in prison. She was eventually transferred to a mental hospital where she died in 1962 at the age of 94. Her dark history became the inspiration for the play (and later the Frank Capra movie) Arsenic and Old Lace.