1982 Tylenol murders suspect identified as dead ex-Lockheed chemist

Idaho authorities identified Matthew Francis Betkouski, a former Lockheed Martin chemist with severe mental illness, as the likely perpetrator of the 1982 Tylenol poisonings, linking him via new evidence. He allegedly discussed executing 'the perfect crime involving cyanide' before his death. The identification resolves a decades-old case but relies on circumstantial evidence, leaving some uncertainty.