Gemma Arterton played the lead role in what movie based on the 2009 novel "Their Finest Hour and a Half"?
Gemma Arterton: Gemma Christina Arterton (born 2 February 1986) is an English actress. Their Finest: Their Finest is a 2016 British war comedy-drama film directed by Lone Scherfig and written by Gaby Chiappe, based on the 2009 novel "Their Finest Hour and a Half" by Lissa Evans.
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