W ciemności (In Darkness) is a co-production between Poland, Germany, and Canada. It tells the story of Leopold Socha, a Polish man who went from small-time crook to hero during World War II. Risking his own life and the lives of his loved ones, he saved a dozen men, women, and children by hiding them for 14 months.

Holland previously received an Academy Award nomination in the Best Adapted Screenplay category for her film Europa, Europa in 1992. Her feature Bittere Ernte (Angry Harvest) received an Academy Award nomination in the Best Foreign Language Film category in 1986, representing West Germany.

In Darkness was produced by Studio Filmowe Zebra, and co-produced by Hidden Films Inc. (Canada) and Schmidtz Katze Filmkollektiv GmbH (Germany). The film received financial support from the Polish Film Institute and the Łódź Film Fund.

Sony Pictures Classics, specialized in distributing and promoting foreign-language films in the US market, bought the rights to the film in February.

The distribution of thefilm in Poland will be handled by Kino Świat. In Darkness is set for theatrical release in September 2011.