| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| October 1988 |
|
The Dark Door | St. Martin's Press | Novel | 1 |
| January 1990 |
|
Urania #1118 | Mondadori | MAGAZINE | 3 |
| February 1990 | The Dark Door | Gollancz | Novel | ||
| March 1990 |
|
The Dark Door | Tudor | Novel | |
| July 1991 |
|
Die Tür ins Dunkel | Heyne | Novel | |
| May 1993 |
|
The Dark Door | Leisure Books | Novel | |
| January 2000 |
|
The Casebook of Constance and Charlie: Volume 2 | St. Martin's Minotaur | Omnibus | 1 |
| June 2012 |
|
The Dark Door | InfinityBox Press | Novel |