Hag's Nook, first published in 1933, is a detective story by John Dickson Carr

John Dickson Carr

John Dickson Carr was an American author of detective stories, who also published under the pen names Carter Dickson, Carr Dickson and Roger Fairbairn....

 and the first to feature his series detective Gideon Fell

Gideon Fell

Doctor Gideon Fell is a fictional character created by John Dickson Carr. He is the protagonist of 23 novels from 1933 through 1967 as well as a few short stories. Carr was an American who lived most of his adult life in England; Dr. Fell is an Englishman who lives in the London suburbs.Dr...

. This novel

Novel

A novel is a book of long narrative in literary prose. The genre has historical roots both in the fields of the medieval and early modern romance and in the tradition of the novella. The latter supplied the present generic term in the late 18th century....

 is a mystery of the type known as a whodunnit.

Plot summary

Tad Rampole is a young American traveling in England who, in a chance encounter on a railway platform, meets and falls in love with Dorothy Starberth. Rampole has a letter of introduction to Dr. Gideon Fell and both soon become involved in the affairs of the Starberth family. The family has a long history as having been the governors of Chatterham Prison and, in connection with that post, there is also a tradition that the "Starberths die of broken necks". Chatterham is now abandoned and inhabited only by rats, but the eldest son and heir to the Starberth family must spend the evening of his 25th birthday there, as directed by an ancestral will. The night after Rampole meets Dorothy Starberth, her brother is found with a broken neck, below the balcony of the room where he was to spend the night. Dr. Fell must sort out ancient superstition from modern-day malice to ensure that the responsible criminal does not go unpunished.