John Joseph “Jack” Shanagher, an 83-year-old man, died on March 11, 2003 at Somerset Medical Center in Somerville, New Jersey. What began as an obituary and a family's private grief later took on the shape of something far darker: investigators would come to include Shanagher among the patients whose deaths were linked to a nurse later identified as one of the country's most notorious serial killers.
In the months after his death, clinicians and state investigators re-examined a strin
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