| The Seventh Hypothesis | |
| Author: | Paul Halter |
| Title Orig: | La Septième Hypothèse |
| Orig Lang Code: | fr |
| Genre: | Mystery |
| Pub Date: | 1991 |
The Seventh Hypothesis (fr|La Septième Hypothèse) is a 1991 book by Paul Halter.
In 2014, The Guardian's Adrian McKinty considered The Seventh Hypothesis the third best locked-room mystery.[1] One plot point turns on the revelation that a Mechanical Turk chess automaton was operated by a person inside the machine, reflecting a recurring theme in Halter's books that technology might allow seemingly-supernatural events to be real.[2]