1:41ABC NewsDecember 23, 2018Investigators intensify search for the body of Colorado mother Kelsey BerrethBerreth's fiancée is being charged with murder after being arrested on Friday; police believe he didn't act alone.Up Next in newsA new reward is being offered for information to help find Kelsey BerrethDecember 16, 2018FBI searches Kelsey Berreth's fiance's home December 15, 2018Fiance of missing Colorado mom arrested by policeDecember 21, 2018