- - Reading matter.
- - One out of money put time into a sequence of esoteric rites
- - Stories with culprits
- - The ...... of Udolpho, 1794 novel by Ann Radcliffe
- - Phenomena that can't be explained
- - Enigmas, puzzles
- - Tales of Hercule Poirot
- - Escape literature.
- - Detective stories
- - Unknowns
- - Enigmas
- - See 17-Across
- - Agatha Christie books
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