'You can't express the pain that I go through being married to Geoffrey ... there's no finality about my pain - it's every day. It's going on and on for years and years.' Rhona Prime , wife of GCHQ spy Geoffrey Prime , explains the dilemma she faced when she 'shopped' the husband she loves, and the cost of standing by him since his conviction. Loyalty is said to be the holiest virtue in the human heart, but is there virtue in the popular idea that a woman, no matter what, should stand by her man? Jenni Murray talks to four women who have been loyal to husbands who have been involved in robbery, rape, murder and espionage. Why do they do it when loyalty means sharing the punishment for someone else's crime?