Volume 1 of The Carnacki Casebook is a collection featuring three cases: The Haunting of Halton Grange, The Barton Wood Mystery, and The Secret in the Library.
The Haunting of Halton Grange: The staff of Halton Grange, a property in Dorset just south of the tranquil village of Corscombe, discover a mysterious hallway in the manor that had not been known of before. Dark and distorted, they daren’t enter. Lord Halton and Carlisle, the butler, brace themselves and venture inside. They find a part of the manor they’d thought had been torn down decades previously, and had contained the rooms of Lord Halton’s Great-uncle Colin: A skeleton in the Halton family closet with an evil reputation, including accusations of murder and dark magic. Making their way to the ancient bed chamber, they encounter a creature that had once been Lord Halton’s Great-uncle, and they barely escape with their lives. Realizing their dire need, Lord Halton contacts occult detective Thomas Carnacki, who enters the dark world himself and uncovers an even greater evil haunting Halton Grange. Part I of The Black Obelisk, a continuing series.