The Norbury File
Holmes theorised brilliantly at Norbury — and brilliantly wrong. Judge every claim in the file.
Blackmail, a dead husband, a cottage with a watching face: mark each statement true or false, and find where the great theory broke.
Drawn from The Yellow Face (The Memoirs of Sherlock Holmes, 1893) — read the summary & analysis, or try Blackmail or Something Kinder, this story's analysis tool. More at the Game Room and the tool bench.