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The Ashen Keep

The dead court waits beneath the ruined towers, and the king still expects his subjects to kneel.

17 roomscastlemedium

The Ashen Keep is a ruined castle whose lower halls survived long after its towers collapsed. Its prisons, shrines, and sealed treasury now shelter the remnants of a royal court that refuses to admit the kingdom is dead.

Cold stone sweats beneath faded royal banners. The air smells of wet iron, old incense, and sealed graves, while distant chains clink whenever the castle settles. Most chambers are lit by blue witchfire leaking from cracked wall sconces, leaving corners unnaturally dark.

☠ Threat

King Odran Halvorn rules the deepest hall as a deathless revenant, clad in blackened plate and crowned with iron thorns. He believes the adventurers are late envoys from the living kingdom and commands them to kneel, but his courtesy collapses into violence when they resist. Every undead servant in the keep is sustained by his oath to restore the queen, and destroying him without addressing that oath may awaken her soul as a greater menace.

History

The Ashen Keep was built by King Odran Halvorn as a mountain fortress and royal prison. When his queen died during a winter plague, Odran bargained with an oracle beneath the castle, promising the souls of every prisoner in exchange for her return. The queen rose without a soul, the dead guards followed, and the keep was sealed by surviving knights who could not destroy their king.

Encounter Table

CR
1/2CR
Ashen Patrolx2d4

A patrol of dead castle guards carrying extinguished lanterns and rusted halberds.

1CR
The Faceless Usherx1

A pale courtier with no face, dragging a ledger chained to its wrist.

2CR
Banner Ravensx1d6

A swarm of skeletal ravens carrying scraps of black banner cloth.

3CR
The Frost Courtx1 procession

A translucent noble procession that marches silently through walls and leaves frost behind.

Rumours & Whispers

1

The old king still holds court below the ruins, and every visitor is expected to bring a gift for the dead queen.

2

A hidden treasury exists beneath the guardroom, but the vault kills anyone who speaks inside it.

3

The castle's prisoners were not executed. Their names were burned into the walls so the king could command them forever.

4

A servant's passage bypasses the worst of the keep, though only someone who knows the old household prayers can open it.

5

A silver bell can make the dead remember that they were once human.

Quest Hooks

1
The Lost SignetRescue and recovery

Quest giver: Lady Merrow Vane, a desperate young aristocrat

A village noble hires the party to recover a signet ring carried into the Ashen Keep by a missing heir. The heir's last message mentioned prisoners still calling for help beneath the castle.

300 gp, a letter of introduction, and the heir's hereditary signet

2
The Dead Keep WalkingUndead threat

Quest giver: Brother Caldus, an exhausted gravekeeper

Graves around a nearby chapel are opening from within, and a priest believes the disturbance began when someone broke the Ashen Keep's outer seal.

A blessing that grants advantage on one death saving throw, plus 250 gp

3
The Queen's Forgotten NameInvestigation

Quest giver: Professor Elian Thorne, royal historian

A scholar wants the queen's true name recovered from the sealed shrine in room-12, claiming it will end the curse. She conceals that the name is also needed to control the oracle beneath the keep.

A rare history tome, 500 gp, and a favor from the royal archives

4
The Servants' PassageExploration and betrayal

Quest giver: Sella Rook, charming but untrustworthy tomb robber

A faction of treasure hunters offers a share of the royal vault if the party opens the hidden route through room-13. Their leader intends to betray the group once the treasury is reached.

A quarter of the recovered treasure and a map to another lost ruin

Corridor Notes

Main corridors near Room 1 and Room 2

Half-erased heraldic murals show the castle lord kneeling before a faceless crowned figure. The painted eyes seem to follow creatures carrying royal insignia.

Approaches to rooms 2, 3, and 4

Rusting murder holes overlook several passageways, though some conceal intact arrow mechanisms operated from hidden servant passages.

Corridors between rooms 5, 8, and 13

A thin draft carries the smell of roses and ash from deeper chambers. At irregular intervals, it whispers a single word, 'Remain.'

Lower halls near rooms 12, 14, 15, and 16

Boot prints appear in dust that no living creature seems to have made. They lead toward Room 12, then vanish before the boss chamber door.

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