​A dedicated policeman caught in terrifying circumstances, Captain Alexei Korolev of Criminal Investigation Division of the Moscow Militia may be unwavering in his outward party loyalty but he is forever conflicted about what he must do to maintain that good standing.

It is 1937, and Korolev finds himself on an airplane bound for Odessa after the suspicious suicide of Maria Alexandrovna Lenskaya, a loyal young party member who supposedly had an illicit intimate relationship with the party director. His instructions are to determine if her suicide was actually a cover-up for murder, and if so, to find her killer, but under no circumstances reveal her close ties to the director.

Maria was working on the set of a movie subsidized by the state, and between everyone involved in the production, her journalist boyfriend, and countless nosy locals, the pool of possible suspects is large and daunting. Korolev finds help from several quarters that are every bit as ominous as they are useful, but none of them can make up for the one important fact of his case which he cannot discuss.

Moral, loyal, and also committed to justice, Captain Alexei Korolev is trapped between the demands of the party and those of the truth. As a result he is one of the most intriguing figures in crime fiction, and he makes The Darkening Field another shocking and devastatingly true-to-history thriller from William Ryan.