Stories / The Adventure of the Creeping Man
🧮 Analysis tool — freeThe Nine-Day Almanac
Chart the professor's cycle as Holmes charted it — and name the next dangerous night.
Holmes solved the case with a diary: the outbursts fell every ninth day, dated from the Prague journey. Enter the observations and let the almanac fix the cycle — the method that told him which night to watch the house.
Drawn from The Adventure of the Creeping Man (The Case-Book of Sherlock Holmes, 1923) — read the summary & analysis, or try The Professor at the Window, this story's game. More at the Game Room and the tool bench.