A young detective and federal officer search for a missing woman connected to an unsolved double murder case from 1989.

In the summer of 1989, after four bodies are found in the woods, federal officer Thomas Bethge's sister, Barbara Neder, disappears without a trace. Rookie detective Anne Bach is assigned to investigate both cases.

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In the summer of 1989, after four bodies are found in the woods, a federal officer's sister disappears. A rookie detective is assigned to investigate both cases.

The Disappearing

After the police learn Barbara had blackmailed her estranged husband, Robert, he becomes the prime suspect. But Anne has a different hunch.

The Dark Force

Four years later, with no arrests, the police have moved on from the case. Still suspicious of her suspect, the gardener, Anne digs deeper into his troubled past.