Z'ha'dum — Episode 22:

: During the chaos, Chief of Security Michael Garibaldi disappears, his starfury intercepted by a Shadow vessel.

"Z'Ha'Dum" is often cited by fans on sites like TV Tropes and The Lurker's Guide to Babylon 5 as a masterclass in serialized storytelling, effectively raising the stakes and forever changing the course of the Great War. Episode 22: Z'Ha'Dum

The episode centers on Captain John Sheridan’s fateful decision to travel to , the home world of the ancient and malevolent Shadows. He is lured there by his wife, Anna Sheridan, who was previously believed to have died years earlier in the Icarus expedition. : During the chaos, Chief of Security Michael

The episode ends on a massive cliffhanger that left fans reeling for months: He is lured there by his wife, Anna

Upon arriving, Sheridan discovers that Anna has been "reprogrammed" by the Shadows to serve as their emissary. The Shadows attempt to persuade Sheridan to join their cause, arguing that their philosophy of promoting evolution through conflict and chaos is necessary for the galaxy's long-term survival.

Just before the explosion, Sheridan follows the advice of the enigmatic Kosh and leaps into a miles-deep abyss, seemingly choosing death over capture.