THE KNOCKS SOUNDED FAR AWAY. Short calculated knocks. You had a long night. You toss around in bed. The previous night was not just your third night shift in a row; it was one of those nights that lacked peace, one of those nights when Angela, your service user – the eighty-year-old woman with dementia – felt that she was a secret agent held in a foreign prison against her will. And you, her carer, were the prison warder or a government agent spying on her.