Utah authorities on Monday arrested Kouri Richins, a mother of three and the author of a children's book about grief, in her husband's fentanyl death. Prosecutors say Richins, 33, poisoned her husband, Eric Richins, 39, with fentanyl last year at their home in Kamas, just outside of Park City, while their three young sons were sleeping. LiveNOW's Lexie Petrovic spoke with former FBI agent and provate investigator Greg Rogers. Subscribe to LiveNOW from FOX! https://www.youtube.com/livenowfox?sub_confirmation=1 Where to watch LiveNOW from FOX: https://www.livenowfox.com/ Follow us @LiveNOWFOX on Twitter: https://twitter.com/livenowfox Raw and unfiltered. Watch a non-stop stream of breaking news, live events and stories across the nation. Limited commentary. No opinion. Experience LiveNOW from FOX.