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They were called “The Lethal Lovers” — two nurse’s aides, Cathy Wood (25) and Gwendolyn Graham (34), whose twisted relationship would leave a trail of death behind the quiet walls of a Michigan nursing home. When Cathy’s ex-husband walked into a police station in 1988 with a chilling confession, investigators uncovered a string of suspicious deaths among Alpine Manor’s most vulnerable residents. What emerged was a story of obsession, manipulation, and murder — and one of the most disturbing cases of female serial killers in U.S. history.