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Bringing together all the evidence, Emily weighs up contributions and voices from across the series for her 'Poirot' moment. Dr Mark Aldridge explains how Agatha Christie used real-life crimes for inspiration, letting ideas percolate for years before committing them to paper. Jo from the Christie Archive Trust offers a striking verdict after seeing the Daily Mirror front page from December 1935. And biographer Laura Thompson finds the connection "quite persuasive." But as the investigation reaches its conclusion, a deeper question emerges: Why does it matter if Eva's murder inspired a novel? Emily returns to the case evidence with former CSI Tina Orr Munro, and questions whether Eva's death received the investigation it deserved. Back at the kitchen table in Devon, Emily's parents reflect on what the family has learned, and how Eva has been brought back to life, not just as a name in family folklore, but as a real person with hopes and ambitions of her own.
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