In 1897, Morrison published seven short stories detailing the exploits of Horace Dorrington. In contrast to Morrison's earlier character Martin Hewitt, who one critic described as a "low-key, realistic, lower-class answer to Sherlock Holmes " Dorrington was "a respected but deeply corrupt private detective " "a cheerfully unrepentant sociopath who is willing to stoop to theft, blackmail, fraud, or cold-blooded murder to make a dishonest penny." These stories were collected as The Dorrington Deed Box (1897). Included:
- THE NARRATIVE OF MR. JAMES RIGBY
- THE CASE OF JANISSARY
- THE CASE OF THE "MIRROR OF PORTUGAL"
- THE AFFAIR OF THE "AVALANCHE BICYCLE AND TYRE CO. LIMITED"
- THE CASE OF MR. LOFTUS DEACON
- OLD CATER'S MONEY