Season 4 Episode 01 - Adventures in the Sin Trade

Xena desperately tries to find Gabrielle's spirit and when she ask Hades God of the Underworld where she is he doesn't know. So Xena goes to the Amazon afterlife to try and find her, but when she gets there she meets Cyane and her tribe that Xena killed years ago. They cannot cross over properly because they need to know the password so Xena says she will find it for them and stops the search for Gabrielle until she does. Also Xena starts to remember how she killed Cyane with an evil shaman woman called Alti.