: The book was adapted into a well-known 1960 film starring Oleg Efremov and Rolan Bykov, which remains a classic of Soviet cinema.

Published in 1956, the story is set during the NEP (New Economic Policy) era. It follows two young men, Yegorov and Zaitsev, who are appointed to the criminal investigation department on a trial basis. Unlike typical "whodunit" mysteries, Nilin focuses on the internal psychological struggles of the characters as they confront the "cruelty" of their work and the human cost of justice.

: Along with his other famous novel, Cruelty ( Zhestokost ), Nilin is praised for questioning whether the ends always justify the means in the pursuit of social order.

Pavel Nilin's ( Ispytatelnyy srok ) is a foundational work of Soviet detective fiction that explores the moral complexities of law enforcement in the early 1920s. Overview of the Book

: It provides a vivid look into the early Soviet era and the formation of the "Militsiya" (police force).