Susan Snow's Role in the Chicago Tylenol Murders

Cynthia saw capsules and Tupperware container stored in the locker. She thought it was sugar or salt, but found it odd her mother never used it on meals. After Bruce's death, the container and capsules vanished from the locker. The cyanide needed to be discovered so his death would be ruled an accident,. allowing Stella to obtain Bruce's $100,000 accidental death life insurance payout.