After the comic capers in the previous episode, 'Warrior... Princess... Tramp', here we return to the Callisto story arc, begun two episodes ago in 'Return of Callisto'.
Hudson Leick playing Callisto in Xena's body, and Lucy Lawless playing Xena in Callisto's body, do very well, with each picking up little speech and movement traits from the other to make the swap seem all the more realistic.
I like the scene where Callisto really toys with Gabrielle, psyching her up and almost turning her into a killing machine. The fact that she attaches her breast dagger to the end of Gabrielle's staff is quite symbolic, as it is the same one that Gabrielle bought only for (the real) Xena to confiscate it from her way back in 'Dreamworker'.
Joxer doesn't get all that much to do in this episode, but does show that behind all the goofiness he does have a good heart, as he tries to save Argo from Xena, thinking her to be Callisto (keeping up here?).
As is well known amongst fans of the series, the outcome of this episode was hastily reworked for Xena to remain in Callisto's body, after Lucy Lawless injured her pelvis whist filming a skit for America's 'The Tonight Show with Jay Leno' (a quite ironic injury, as it was far worse than any injury Lawless suffered actually filming 'Xena'!). But the swap was so well executed that unknowing viewers could be forgiven for thinking that it had been planned all along.