Babylon 5: Grey 17 is Missing (1996)

Synopsis
Having agreed to take charge of the Rangers, Delenn risks death at the hands of a unknown adversary. And while exploring the inner regions of B5, Garibaldi stumbles across a secret level that has been sealed off for years. Robert Englund of "Freddy Kruger" fame is cast as cult leader Jeremiah. Written by J. Michael Straczynski, "Grey 17 is Missing" made its TV debut in the United Kingdom on August 26, 1996. The episode's American release was held up until October 7 of that same year. ~ Hal Erickson, All Movie Guide