Horror of Castle Xyr

A Destruction skill book: a spooky one-act play set in a haunted castle in Black Marsh.

The Horror of Castle Xyr is a one-act play by Baloth-Kul. An Imperial captain arrives at a castle in Black Marsh, greeted by a maid and an eerie atmosphere, while a young Argonian mage and a lieutenant get caught up in what’s really going on. The finale ends in darkness and flashes of lightning.

Skill book

Horror of Castle Xyr is a Destruction skill book. The first time you read a copy, your Destruction skill goes up by one point – later copies of the same title don’t give anything extra, so there is no need to carry them around.

Book details

  • Author (in game): Baloth-Kul
  • Teaches: Destruction (+1)
  • Weight: 1
  • Base value: 55 gold
  • Item ID: 0001AFEC

More Destruction skill books

A Hypothetical Treachery, Mystery of Talara, v3, Response to Bero’s Speech, The Art of War Magic.

Value, weight and skill read from the Skyrim game files; locations from community-checked lists. The book text is summarised here in our own words – read the full text in game.

Where to find it

  • A bandit’s book (unmarked location).
  • The Burning Farmhouse (unmarked), in a hollow tree outside.
  • Darklight Tower, on Silvia’s table at the end.
  • Glenmoril Coven, inside the north-west tent.
  • Rannveig’s Fast, in Sild’s area.

Lore notes

Quest reward from

Where to find it

Characters connected to it

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Sources checked: Skyrim game files (Skyrim.esm + strings, read 2026-10-11); Elder Scrolls Fandom book articles (locations)