Two Dallas teens helped police find a woman who was kidnapped by a stranger with a gun and butcher's knife.
Aaron Arias and his friend were driving when they spotted a woman in a truck trying to signal for help.
They called 911 and told authorities something did not seem right.
The teens continued to follow the car until police arrived.
The suspect, Charles Atkins Lewis, Jr., was arrested.
The kidnapped woman was not hurt.