You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "What genre, usually involving a mysterious death, is exhibited by a book who features detective Sir Henry Merrivale?" whose answer is Mystery fiction.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Sir Henry Merrivale genre
Useful Output:

Doc 1: He appeared in twenty-two locked room mysteries and “impossible crime” novels of the 1930s, 1940s, and 1950s, as well as in two short stories.
Doc 2: When a spiritual medium is murdered in a locked hut on a haunted estate, Sir Henry Merrivale seeks a logical solution to a ghostly crime.
Doc 3: Sir Henry Merrivale is a fictional detective created by Carter Dickson, a well-known pseudonym of the American mystery writer John Dickson
Doc 4: Detective Fiction / Police Procedural · Domestic / Psychological Thriller  Sir Henry Merrivale is a fictional amateur detective created by Carter
Doc 5: Genre Fiction · Shop All · Mystery & Suspense · Conspiracy · Crime · Detective  Merrivale, March, and Murder - Book #23 of the Sir Henry Merrivale. Merrivale