Michael Hurst returns as Charon, his secondary Xenaverse character. His main role is Iolaus, loyal friend of Hercules.
The title may be an homage to Immortal Beloved (1994), whose title comes from a mysterious letter written by Ludwig van Beethoven.
During the second storming of Castle Hades, Xena says "I've got a bad feeling about this." Variations of this line are spoken by numerous characters in the Star Wars universe.