Episode 1
Henryk Mikos doesn't want to quit his archival job at the Żyrardów police station. An officer detains a violent painter who's beaten his wife.
Episode 2
Tomasz digs through the archives to get a file on a man caught up in a dispute with drug dealers and who's a witness to a murder at a company event.
Episode 3
Strączek is appointed Deputy Chief and wants to force Henryk into retirement. But the irate archivist won't give up so easily.
Episode 4
While sorting through the archives, Henryk comes across a file on the murder of a prosecutor who had an old coin collection stolen from his apartment.
Episode 5
Henryk suggests another old case to Zuzia: the murder of a journalist who died while hunting. Another mysterious death is connected to the case.
Episode 6
A policeman shows up at the archives with the file of a long-unsolved case. Is it related to the mysterious death of a certain choir conductor?
Episode 7
Unexpected guests show up at Zuza's house. Henryk makes a surprising request that's allegedly linked to the death of a nurse.
Episode 8
Rather than investigate the disappearance of a wealthy widow, Tomek has to supervise archivists. Henryk remembers a detail that might help the police.
Episode 9
Boguś is attacked, but he decides to tell Henryk about it instead of the police. The name of a bar comes up in conversation, evoking sad memories.
Episode 10
Tomek questions a man suspected of extorting money. When Henryk finds out about it, he remembers a murder case from four years earlier.
Episode 11
The Chief wants to focus on unresolved cases from the last three months, one of which involves a dog poisoning. Henryk visits the dead dog's owner.
Episode 12
Henryk wonders what his stepson has in common with Barzyński and what role his missing wife Maria played. Zuza and Paweł patrol one of the estates.
Episode 13
A reclusive police archivist and ambitious rookie partner work to clear cold-case crimes.
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