After the rooms at 221B Baker Street are set ablaze—and a mutilated corpse is discovered in the wreckage—Dr. John H. Watson is arrested and imprisoned at Coldbath Fields penitentiary. Writing from a cramped and dimly lit cell, Watson describes the mysterious events leading up to his arrest. Someone has been mailing him a series of cryptic warnings. His lifelong friend Sherlock Holmes has vanished in the raging waters of Reichenbach Falls. And Professor Moriarty’s criminal empire is expanding across Europe and throughout America.

In a desperate attempt to clear his good name, Watson has compiled twelve clues that may prove his innocence, including: • The front page of a newspaper from Thousand Oaks, California • A catalog of Victorian fashions and merchandise • An empty matchbook containing cryptic handwritten notes • The complete text of “The Final Problem,” Watson’s famous account of the death of Sherlock Holmes • Plus a theater ticket, an arrest report, a railroad timetable, and more All twelve clues have been painstakingly reproduced for this volume, along with the complete text of Watson’s manuscript and specially commissioned illustrations by Holmes aficionado Clint Hansen.