Ceremonies of Light and Dark

Ceremonies of Light and Dark is an episode from the third season of the science-fiction television series Babylon 5.

Plot synopsis

Spoiler warning: Plot and/or ending details follow.

Undercover members of the Nightwatch target Delenn.

Jerry Doyle had broken his arm during the filming of Severed Dreams. In that episode Michael Garibaldi was shown as having hurt his leg during the fight with the Earth Alliance Marines who had boarded the station. In Ceremonies of Light and Dark Garibaldi is shown wearing a cast on his arm. Garibaldi explained it as having broken his wrist and fractured some other bones in his arm during the fight and that Dr. Franklin had waited until this episode to put his arm in a cast.
Harlan Ellison was cast in the speaking role of Sparky the Computer, an obnoxious artifical intelligence program accidently brought on-line during the course of the episode.