A Bitter Equation

When Irish mathematician Dora loses her fiancé during the First World War, she makes herself a promise: to live a life extraordinary enough to honour his sacrifice.

In a time when women are expected to know their place, Dora sees the world changing potential of machine calculation to transform the way that industry and governments work. Determined to make her vision a reality, she challenges a male-dominated world and builds a pioneering business empire across Britain and Ireland.

But ambition comes at a price, and everything she has fought so hard to achieve is threatened during the Second World War. Will her work on a top-secret contract with Bletchley Park’s codebreakers destroy her reputation and put her back in her place?

Based on a true story, A Bitter Equation is a tale of one woman’s determination to change the world.