On an icy morning in Paris in January 1943, a group of 230 French women resisters were rounded up from the Gestapo detention camps and sent on a train to Auschwitz – the only train, in the four years of German occupation, to take women of the resistance to a death camp. Of the group, only 49 survivors would return to France.

Here is the story of these women – told for the first time. A Train in Winter is a portrait of ordinary people, of their bravery and endurance, and of the friendships that kept so many of them alive.