| Author | Paul Halter |
|---|---|
| Original title | La Septième Hypothèse |
| Genre | Mystery |
| Publication date | 1991 |
The Seventh Hypothesis (French: La Septième Hypothèse) is a 1991 novel by Paul Halter.
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.
In 2014, The Guardian's Adrian McKinty considered The Seventh Hypothesis the third best locked-room mystery.