"48 Hours" to reveal new details in death of Colorado mom Kelsey Berreth

Patrick Frazee is set to go on trial later this month for the murder of his fiancée, Kelsey Berreth. Prosecutors allege that Frazee’s secret relationship with another woman ultimately led to the murder. New details on the investigation will be revealed in this week’s installment of “48 Hours.” Nikki Battiste, who has been covering the case for nearly a year, reports.