&sq=Qlik&lang=&file=File:Question_book-new.svg){kind=small} | This article needs additional citations for verification. (July 2011) |
| Categories | Science-fiction fanzine |
|---|---|
| Frequency | Occasional |
| Publisher | Robert Lichtman |
| First issue | October 1983 |
| Language | English |
Trap Door is a science-fiction fanzine published by Robert Lichtman, with the first issue appearing in October 1983.