Based on the standard naming conventions for Critical Role episodes, "H255" refers to of the first campaign of The Mighty Nein . The "H" typically stands for the legacy "Hunter's Hub" numbering or is a typo for "E," but the number 55 corresponds to a major episode in the campaign.
"They're coming," the memory-mage cried, her voice a scraping whisper inside their skulls. "The Prime Deities. The Betrayers. All of them. They've agreed on one thing: us. We must be unmade." mighty nein s01 h255
The central narrative drive of "Duplicity" focuses on Essek Thelyss, the Shadowhand of the Dynasty. Having been the group's primary contact and benefactor, Essek’s relationship with the Nein is complicated. In this episode, the party attempts to navigate the political fallout of the Beacon's return while trying to uncover more about the war efforts. Based on the standard naming conventions for Critical
, making his threat and the political tension between the Dwendalian Empire and Kryn Dynasty more immediate than in the original 141-episode campaign. "The Prime Deities
The Echo in the Crystal