Angela Clarkson's life has turned into one big mystery. Her friends are giving up riding horses so they can ride around in cars and shop. Her family doesn't seem to understand her anymore, and her brother and his friends have been acting strange. Then a mysterious stranger gains a powerful influence over her best friend who turns out to be at the center of a secret that concerns the line drawn between Heaven and Hell. Her greatest mystery is solved when she learns the difference between an angel of light and an angel of lies.