Not alone? Suspicions arise that the biological MOTHER played a role in the story of “writing a book about l0sing her husband”… but the truth behind it is far more ch!ll!ng…:

Kouri Richins, the children’s book author who famously wrote a book on grief about the sudden death of her husband — and then was accused of fatally poisoning him — may not be the first woman in her family to allegedly off a romantic partner, investigators believe.

In an affidavit for a search warrant recently unsealed and obtained by PEOPLE, the Summit County Sheriff’s Office in Utah alleges a possible connection between the 2006 overdose death of Kouri’s mother’s former partner and that of Kouri’s husband in 2022.

Whether crime or coincidence, Detective Jeff H. O’Driscoll suggests the earlier death could have provided Kouri with a roadmap to murder.

Of Kouri’s mother, Lisa Darden, the detective claims: “It is possible she was involved in planning and orchestrating Eric’s death.”

Around 9 p.m. March 3, 2022, Kouri and Eric were celebrating Kouri’s real estate business deal alongside Kouri’s mother, Lisa Darden, according to the detective, who said: “Kouri stated they had a drink to celebrate.”

On May 8, 2023, the Utah soccer mom, whose book about her husband’s death had recently been published, was arrested and accused of killing Eric.

In the affidavit, O’Driscoll alleges that Kouri’s mother’s history with the death of a romantic partner invites the possibility that she may have been involved with Eric’s death.

“In investigating Kouri Richins’s associates, it was discovered that in 2006, Richins’s mother, Lisa Darden was living with an adult female with whom she was having a romantic relationship,” O’Driscoll alleges in the affidavit.

That woman – who is not named in the affidavit – also “died unexpectedly,” per the affidavit.