Sept. 24: 'In Broad Daylight' two-hour season premiere

When 14-year-old Amber DuBois left for school one morning and never returned home, police, family and friends searched across the country, even across the Mexican border, but found no trace of her. Just over a year later, in a neighboring town in California, another teenager, Chelsea King, left to go for a jog and never returned. In Chelsea's case, authorities used DNA samples to link a convicted sex offender to the scene of her attack and murder, but there was no evidence in Amber's disappearance. It's every parent's worst nightmare and as a result of their tragic story, Gov. Arnold Schwarzenegger signed "Chelsea's Law" earlier this month to better protect children in California.

This Friday, Sept. 24, at 8pm/7c, Dateline kicks off with a two-hour season premiere 'In Broad Daylight'. Keith Morrison brings viewers inside the disturbing story of how these two teenage girls suddenly vanished during the day and how their families received justice for these unspeakable acts. He speaks exclusively with San Diego Sheriff's homicide detectives who offer details, never heard before, about their investigation into the Chelsea King and Amber Dubois murders.

Watch a preview of how Amber DuBois' mother decides to confront the killer:

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