North Carolina investigators say a 2025 poisoning death has cracked open a homicide case that had been cold for nearly two ...

Gudrun Casper-Leinenkugel is accused of poisoning a bottle of wine with acetonitrile, which she then served to her daughters.

Leinenkugel, 52, is alleged to have Googled "What happens if I accidentally ingest acetonitrile" before her daughter died ...