Remove the leftmost location from the game (or place it in the victory display if it has Victory X and no clues on it). Each investigator at that location is defeated. Each enemy and asset at that location is discarded.

Discard all clues controlled by the investigators.

Shuffle the encounter discard pile into the encounter deck. Then, discard cards from the top until a location is discarded. The lead investigator resolves that location's 'revelation' effect.

Check Campaign Log. If the investigators failed to save the students, read the following:

"A huge canine creature, alien to your eyes and yet familiar, appears before you. The creature rushes forward, and you prepare to fend it off, but to your surprise it runs through you, towards a building that wasn't behind you moments before: Derby Hall from the Miskatonic University. The creature bursts through the building's front door and you hear screams of panic from inside, followed by the crunch of snapping bones and cries of pain."

Each investigator takes 1 horror, regardless of their location.

(→R2)

Shuffle the encounter discard pile into the encounter deck. If there is a set-aside Brood of Yog-Sothoth, the lead investigator reads the following (out loud):

Bleak storm clouds churn overhead and a blanket of rain pelts the countryside. As the downpour grows in intensity, you take refuge in a half-ruined shack nearby. There is a flash of lightning, and in the brief illumination, you spot the outline of something large in the rain. Without warning, the distant trees bend, though nothing seems to be bending them. Moments later, a force with the strength of a truck crashes into your refuge.

Spawn 1 of the set-aside Brood of Yog-Sothoth enemies at the lead investigator's location, if able. Then, each investigator at that location tests (4). The newly spawned Brood of Yog-Sothoth makes an attack against each investigator who fails this skill test.

Revelation - Spawn the set-aside Yog-Sothoth enemy at The Edge of the Universe. If The Edge of the Universe is not in play, spawn it in Another Dimension, instead. Advance to agenda 4a.

Shuffle the encounter discard pile into the encounter deck.

Remove each of the two leftmost locations from the game (or place it in the victory display if either one has Victory X and no clues on it). Each investigator at those locations is defeated. Each enemy and asset at those locations is discarded.

Discard all clues controlled by the investigators.

Each investigator must immediately resign.

(→R1)

Each investigator who has not resigned is defeated and suffers 1 physical trauma.

Each investigator is immediately defeated and takes 1 mental trauma. (→R2)

Shuffle the encounter discard pile into the encounter deck. Then, discard cards from the top until a location is discarded. The lead investigator resolves that location's 'revelation' effect.

Check Campaign Log. If at least one name is recorded under "Sacrificed to Yog-Sothoth," read the following:

"You hear a familiar voice calling out to you, and you enter an impossibly shaped building of cracked stone. "No… don't!" the voice cries. You rush toward the voice, down a set of steep, narrow stairs. Upon reaching the bottom, you find yourself in the hidden chamber from Dunwich. Bound by shackles, you see those you failed to save, bloodied and maimed. A creature with a man's face feeds from a corpse on the ground. The head of the corpse turns to face you, and a sharp pain stabs your heart."

Each investigator tests (X), where X is the number of names recorded under "Sacrificed to Yog-Sothoth." For each point an investigator fails by, that investigator takes 1 damage.

Shuffle the encounter discard pile into the encounter deck.

Spawn 1 of the set-aside Brood of Yog-Sothoth enemies at a random location, if able.