Thieves in the Night: Chronicle of an Experiment is a novel by Arthur Koestler written in 1946.
Originally intended to be the first of a trilogy, Koestler later concluded that the book stood well enough on its own for further novels to be redundant.
Based on the author's own experiences in a kibbutz, it sets up a stage in describing the historical roots of the conflict between Arabs and Jewish settlers in the British ruled Palestine.
The book tackles many subjects, such as Zionism and idealism.
Koestler was a Revisionist Zionist in his teens and 20s, but in later life his attitude toward Zionism grew more distant.