Revealing mistake: When Xena is explaining to Gabrielle what happened at Cirra, her native New Zealand accent can be plainly heard when Xena says "ordinary".
Xena: Warrior Princess (1995)
1 revealing mistake in Callisto - chronological order
Revealing mistake: When Xena 'dies', her pulse is checked, and they can't find one, yet you can see her pulse in her neck. (00:30:30)
Trivia: This was the 2nd of a two part episode, and the script had to be totally re-written as a mostly Xena Free episode due to Lucy breaking her pelvis in an accident on the Jay Leno show.