Xena: Warrior Princess - Season 3 Episode 6 -

Xena is asked to come to the far kingdom of Chin to kill a person. She decides to do it, although Gabrielle doesn't understand why Xena is going to give up the last years she has dedicated to the Greater Good and become a murderer again. While they're travelling, Xena tells Gabrielle a story of her past which would explain what she is going to do.