Revealing mistake: After Xena gets out of that chair, she does a swinging kick from her whip and you get a shot of her feet connecting with her victim's chest. The fake feet that are used are seen bending backwards.
Continuity mistake: During the battle in Callisto's cave hideout, Callisto leaves her sword behind when she runs to her chariot. When Callisto sinks in the quicksand, her sword and dagger are not seen. When Xena encounters Callisto in the underworld in "Intimate Stranger", Callisto's sword and dagger have reappeared.
Other mistake: As Xena and Gabrielle are walking along the river, the upper story of a modern A-frame house comes in and out of camera view in the upper-left corner.