Prosecutors say Kouri Richins slipped five times the lethal dose of the synthetic opioid into a cocktail that he drank

Kouri Richins, 35, was convicted on all charges after poisoning her husband Eric by lacing his cocktail with fentanyl

A jury found that Kouri Richins killed her husband in March 2022 by poisoning him with a fentanyl-laced drink.