A mutant gene causing Alzheimer’s is discovered in the Jennings family, it leads scientists on a journey to develop a cure and leaves family members with a terrible dilemma.

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In 1986, Carol Jennings, a young teacher from Nottingham, writes a letter to a professor studying the cause of Alzheimer’s at St Mary’s University, London. That letter not only transforms research into the disease, leading to a series of scientific breakthroughs, it also ultimately shapes the future of her own family.

BBC 2 – 1 x 60’

Executive produced by Colin Barr and Arthur Cary

Directed and produced by Niamh Kennedy