The third-season
Babylon 5 saga "Point of No Return" arrived at a cliffhanger conclusion with its 22nd installment, "Z'Ha'Dum."
Melissa Gilbert guest-stars as Anna, Captain Sheridan's wife, whom he believed was killed five years earlier. Against his initial protest, Anna guides Sheridan to Z'ha'dum, the homeworld of the dreaded Shadows, ostensibly to settle the hostilities that have dominated the past 21 or so episodes. In other developments, Londo is informed of the fruits of his ruthless political jockeying. The episode ends with a disturbing development, indicating that the troubles between B5 and the Shadows are far from over. Written by J. Michael Straczynski, "Z'Ha'Dum" was first broadcast in England on September 22, 1996; alas, the series' American fans would have to wait until the week of October 28. ~ Hal Erickson, All Movie Guide