The Haunting of Amphipolis - S6-E2
Revealing mistake: When Xena comes in and checks on Gabrielle, a possessed Gabrielle is hanging from the ceiling naked. In the long shot you can see her nude suit and the wires holding her up.
Revealing mistake: There is an Amazon ritual being performed where the character has to be cut on the arm, but you can see the blood on the knife before the blade touches her arm.
