| | | | Part One: Being a reprint from the reminiscences of |
| | | | John H. Watson MD , late of the Army Medical Department |
| 1 | | | Mr. Sherlock Holmes |
| | | Murray | An orderly who saved Watson at the Battle of Maiwand. |
| | | Stamford | Watson's old acquaintance. |
| | John H. | Watson | British army doctor who was injured during the Afghan war. |
| | Sherlock | Holmes | Consulting detective to the London police force. |
| 2 | | | The Science of Deduction |
| | Mr. | Lestrade | One of the Scotland Yard detectives. |
| 3 | | | The Lauriston Gardens Mystery |
| | Enoch J. | Drebber | Murder victim. |
| | Tobias | Gregson | One of the Scotland Yard detectives. |
| | Joseph | Stangerson | Drebber's private secretary. |
| | John | Rance | The constable who found Drebber's body. |
| 6 | | | Tobias Gregson Shows What He Can Do |
| | Madame | Charpentier | Boardinghouse owner. |
| | Wiggins | | Leader of the street urchins employed by Holmes. |
| | Arthur | Charpentier | Naval officer and son of Madame Charpentier. |
| | John | Underwood | Store owner. |
| | Alice | | Madame Charpentier's daughter. |
| 7 | | | Light in the Darkness |
| | Jefferson | Hope | Hunter and silver prospector who fell in love with Lucy Ferrier. |
| | | | Part Two: The Country of the Saints |
| 8 | | | On the Great Alkali Plain |
| | Elder | Stangerson | One of the principal Mormon elders. |
| | John | Ferrier | A traveler rescued by the Mormons. |
| | Lucy | Ferrier | John Ferrier's adopted daughter. |
| | Joseph | Smith | American religious leader and founder of Mormonism. |
| | Brigham | Young | Chief of the Mormons. |
| 9 | | | The Flower of Utah |
| | | Kemball | One of the principal Mormon elders. |
| | | Johnston | One of the principal Mormon elders. |
| | Elder | Drebber | One of the principal Mormon elders. |
| 12 | | | The Avenging Angels |
| | Cowper | | Jefferson Hope's Mormon acquaintance. |
