Stasi Vice: An East German crime novel (Reim Book 1)
Lieutenant Reim of the Stasi is keen to avoid trouble.

Reim enjoys his life in East Berlin and sees no need for his days behind a desk and nights in front of the bottle to change.
But when a senior officer has a messy affair, it falls to Reim to do the clearing up.
It should be a straightforward job. Lean on a few people to get them to shut up. Intimidate neighbours, bribe officials and appeal to the socialist conscience of Party members. But when Reim starts his interrogations, he realises his boss is hiding more than just a lover.
Lieutenant Reim begins to investigate his superior—and what he uncovers puts his own life at risk.

If Raymond Chandler had lived in East Berlin, this is the book he would have written