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Sally Magnusson and her family cared for their mother for many years before her death from dementia. With a possible familial link, Sally has often wondered: Will I be next?

Now a cure for Alzheimer’s is in sight – but the scientists need people like Sally to be tested. She can find out if she has the invisible indications of Alzheimer’s in her brain already by being part of a groundbreaking study of 'healthy brains' at Scotland’s pioneering brain clinic.

With privileged access to Sally’s sisters, her own children and their extensive family archive, this film paints a portrait of a family as they weigh up a potentially life-changing decision.