We're hearing some gripping audio this morning from a 911 call in Dallas, where two teens called police after driving by a vehicle and seeing a woman mouth "help me" from the backseat.

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The 25-year-old woman had been kidnapped Aug. 22 after leaving an office party in downtown Dallas about an hour earlier. The suspected kidnapper, Charles Atkins Lewis Jr., is alleged to have forced her into her own car at gunpoint and then drove away.

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The soon-to-be heroes first noticed the woman because they thought she was attractive, but the situation quickly turned very serious. The 19-year-old college freshman and 17-year-old high school student followed the car for miles until police arrived and arrested Lewis.

The woman, not identified, was unhurt in the ordeal.

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Casey Stegall reported the latest this morning on America's Newsroom. Watch his report and hear the dramatic 911 call above!