The Vanishing | Critical Role | Campaign 4, Episode 20 Part 1

Summary of The Vanishing | Critical Role | Campaign 4, Episode 20 Part 1

by Critical Role

2h 20m•April 2, 2026
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Overview of The Vanishing | Critical Role | Campaign 4, Episode 20 Part 1

This episode follows two parallel threads: a haunting, mystical scene in the Tenebral Reaches where a seeker (Octus/Vaelus) uses the Stone of Nightsong to speak with a ritual-corrupted cousin (Tertia) only to have the ghost wrenched away; and a tangled conspiracy in the city of Dolmachiar where the “Schemers” (the party’s Dolmachiar-based characters) investigate strange magic, missing spell tablets, a ruined gala at the Palazzo Divinos, and begin deliberately planting evidence to pit noble houses against one another. The epilogue climaxes with a staged supernatural vision implicating House Taconus and the episode ends on the phrase that also becomes the thematic hook: “All truth starts as an illusion.” Part 2 continues the scene on Tuesday.

Key plot beats

  • Opening scene: Seekers (traveling party) stop on silver-white sand with the corpse of Dame Gaia Aramai. Vaelus/Octus tends the body, unwraps wounds, and processes grief and family trauma with Tysha.
  • Spirit contact: Octus/Vaelus chooses to speak to the head of Tersha/Tertia using the Stone of Nightsong. A spectral Tertia appears, her wings ripped and anchored unnaturally, with a fossilized heart. As Octus connects, a monstrous bone talon (a griffon-like claw) rips her away — the contact is broken and Tertia is taken.
  • Return to Dolmachiar: extended city-side plot (the “Schemers’ Table”) resumes. The group investigates the aftermath of Thiazzi Fang’s execution, a cleaned-up gala at Palazzo Divinos, and vanished people believed swept off to Faerie.
  • Magic item discovery: the party learns a “Misty Step” glyph in Thiazzi’s coat was a convincing fake; genuine blanks made by Hand & Wheel (ceramics/arcane tablets) were stolen — theft of spell blanks is a major clue.
  • Conspiracy building: Azune (Lieutenant/arcane marshal) receives a split glyph and candle from a contact; plan hatched to plant evidence implicating House Taconus in atrocities at Palazzo Divinos to seed mistrust among the Sundered Houses.
  • Arcanade / Penteveril intersection: Murray and Bolaire manage interns/staff, search applications (no obvious slam-dunks; worry about missing student Demetis Blix), and prepare the Arcanade for expected chaos. Demetis’s backstory as a busking illusionist and Bolaire’s patronage are shown in flashback.
  • Palazzo Divinos investigation: Azune and his arcane marshals find a “scrubbed” room in the West Wing — walls mended (mending cantrip evidence), a missing desk, and a knife gouge in a table. The damage feels intentionally cleaned; the team suspects a cover-up.
  • Staged haunting: Bolaire and Murray (with subterfuge and illusion magic) fabricate a vivid, traumatizing “vision”/recording of the massacre. Grotto is affected and bleeds from his nose; the vision shows the exact table/knife wound and the place where Octus was slain — the lie they create aligns with buried truth.
  • Cliffhanger: the staged reality convinces enough witnesses to spread the rumor that Taconus destroyed Divinos and Royce. Episode ends with “All truth starts as an illusion.”

Main characters in this episode

  • Octus / Vaelus — seeker who contacts Tertia’s spirit using Stone of Nightsong.
  • Tertia (Tersha) — ritual-corrupted cousin whose spirit appears but is grabbed away.
  • Dame Gaia Aramai — corpse examined by the Seekers.
  • Tysha, Julian, Dr. Talter — with the Seekers at the camp.
  • Azune (Lieutenant) — arcane marshal leading investigation at Palazzo Divinos.
  • Harandus Einfassen — lord present at the Palazzo Divinos scene; wields social power over Azune.
  • Bolaire (Belair), Murray Magnesson — Arcanade staff; central to the conspiracy/forgery.
  • Hal / Hallandilfang — theater owner (Hallowed Round); involved in city-side plots and errands.
  • Grotto, Dala, Horus — arcane marshals/assistants (investigators on scene).
  • Demetis Blix — missing illusionist student/gnome; highlighted backstory and relationship with Bolaire.
  • Duchess Elisabetta / Prince Rowan / Sir Cavalier — Timony retinue that arrives in Dolmachiar (King Gus absent).

Major themes & takeaways

  • Cover-ups and erasure: magic was used to “clean” physical signs of violence; the team finds mended walls and scrubbed residue that point to deliberate concealment.
  • Illusion vs. truth: a recurring motif—lies and theatrical illusion are used strategically to reveal or redirect truth (literalized in the staged vision).
  • Political manipulation: Azune, Bolaire, and Murray actively prepare to fabricate evidence to manipulate inter-house politics—this episode escalates from investigation to deliberate misinformation.
  • Personal consequences: characters process trauma and family histories (Octus and family, Azune’s childhood in the Falconer’s Rebellion), showing how personal wounds interleave with public plots.

Notable moments & quotes

  • “The last thing she tried to do was help me. Tell me to get out.” — Octus reflecting on Tertia/Gaia’s final actions.
  • Harandus Einfassen to Azune: “This secret of yours that I hold gives me power over you. … You should fear me.” — sharp illustration of power leverage.
  • The conspiratorial tactic: splitting a glyph — one half planted as evidence, one kept as a “secret” for framing.
  • Episode punchline (closing hook): “All truth starts as an illusion.” — both summary and thematic title for the episode’s cliffhanger.

Important plot clues & worldbuilding details

  • Stolen “blanks” from Hand & Wheel (ceramics) are the source blanks for illicit spell-tablet forging — key lead for who’s manufacturing spell items.
  • Distinction between a “fake” Misty Step glyph (non-magical, intended to bypass detection) and a genuine Misty Step glyph (in circulation).
  • The Palazzo Divinos gala illusions had been removed — but physical mending left telltale signs (mended walls, knife gouge, missing furniture) suggesting an attempt to erase events rather than showing magic residue.
  • Demetis Blix: his absence and busking-to-school backstory make him a vulnerable plot point (and a person Bolaire has been supporting).
  • Political presence of Timony’s retinue, including Duchess Elisabetta and a boy Prince Rowan, foreshadowing broader regional stakes.

Structure & production notes

  • This podcast episode includes many sponsor breaks and live announcements (Whole Foods Market, Northwestern Mutual, Beacon membership, Aether and Iron game, Echoes of Exandria live shows, new novel Children of Empire, eBay Live shopping, Quince, HelloFresh, Shopify, ZipRecruiter, BetterHelp, KeyBank, etc.). Beacon members get ad-free early access and extras.
  • Part 2 of Episode 20 continues the action (released the following Tuesday).

Recommendations for listeners (what to watch/listen for next)

  • In Part 2: expect fallout from the staged vision—who believes it, how the Revolutionary Council responds, and whether the planted evidence successfully sows discord between House Taconus and others.
  • Pay attention to the Hand & Wheel theft lead (missing blank tablets) — that thread will likely point to the suppliers or forge network behind the false glyphs.
  • Keep an ear out for Demetis Blix’s fate — he’s both narratively useful and emotionally tied to Bolaire and the arcs at the Penteveril.

This summary captures the episode’s dual strands (supernatural contact and city-scale conspiracy), the main twists, and the stage set for Part 2. If you want a one-line TL;DR: the party uncovers a magically scrubbed massacre, stages a convincing illusion to pin blame on House Taconus, and ends with the chilling reminder that sometimes lies are used to reveal deeper truths.