Mother of Utah Woman Charged in Husband's Death Investigated for Similar Past Incident

Authorities delve into Lisa Darden's history after her daughter's arrest, uncovering a suspicious overdose death in 2006.

Kouri Richins, a Utah mother, is charged with poisoning her husband, Eric Richins, with a fatal dose of fentanyl.
Investigations reveal Kouri Richins' mother, Lisa Darden, may have been involved in Eric's death and had a similar incident in 2006.
Darden was investigated after her partner died from an oxycodone overdose; she was the beneficiary of the partner's estate.
Authorities found conversations indicating Darden's disdain for her son-in-law, Eric, and her close relationship with Kouri.
Kouri Richins remains in custody, facing charges including aggravated murder and possession with intent to distribute controlled substances.