The Baker Street Dozen (short story)

 was the seventh story of Tales of the Great Detectives.

Summary
to be added

Characters

 * Dr John Watson
 * Mr Sherlock
 * Broken Holmes
 * Dorcas Baynes
 * Henry Jekyl
 * Arthur Conan Doyle
 * Takumi Fujimoto
 * James Moriarty

Worldbuilding

 * Trapezium was a fabled posthuman planet.

Continuity

 * The University of the Seven Ages previously appeared in PROSE: The Socratic Problem.