When Doris is found directing traffic in the middle of the night, her daughter Jessica is forced to put her in a home. Clearing out the family house in preparation for selling it, Jessica comes across secrets her mother kept from her long before her memory began to erode under Alzheimer's Disease. The knowledge Jessica uncovers as the family secrets are revealed and past memories are stirred, is fleshed out by the revelations Doris herself provides as her story unravels backwards. But the biggest secret of all is only brought to light when a medical research programme requires blood samples.