What happens to a spy when she's ninety years old? While her middle-aged children argue over her care, disabled widow Marjorie Rosen relives a dramatic, unspoken life of espionage, betrayal and violence - about which they know nothing. THE UNKNOWN MRS ROSEN is a story about a spy, but it is not a spy story. For it is not Nazi Germany or Soviet Russia which defeats Marjorie, but neglect in hospital in a quiet English seaside town.