The terrifying moment Dwayne Johnson saved his mother's life

For years, Dwayne "The Rock" Johnson says he and his parents lived paycheck to paycheck, moving to a different city every time his dad, a professional wrestler in the '80s, got a new gig.

When Dwayne was 15, he and his mother followed his father to Nashville, Tennessee, from California. Soon after she arrived, Dwayne says his parents got into a fight that he'll never forget