When a man convicted of a 1948 mass murder died of natural causes on death row 25 years ago, most people believed that meant unresolved questions about the “Teigin Incident” would never be answered.
However, a group of lawyers and experts in pharmacology and psychology are still struggling to unearth the truth behind the notorious mass-poisoning case and exonerate Sadamichi Hirasawa, who passed away May 10, 1987, in a prison hospital in Tokyo at age 95.
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