This is the story of Ruth Taylor. We meet her first as a troubled schoolgirl in a poor part of London. Her teacher there is John Dexter. They have a brief meeting, and do not meet again for five years. By then he is a married man with children, and she a single mother of a daughter. They have another brief connection, and do not meet again for another five years. The Colour of Her Eyes tells the story of why, and what hapoens then, and who they really are. And tells the story of the investigation of a crime by Detective Inspector Harris.