Dr Susan (Lesley Anne Down) is a practicing psychologist who also hosts a radio program. Naturally, the talk show tries to help listeners with personal problems. One day, Dr Susie hosts an author who has written a book on women who disappear. Also a doctor, this man talks of lonely women who are vulnerable to preying gentlemen. As a part of the show, a lady calls in and relates a story from a cruise she took. Separated from her husband at the time, "Karen" says a handsome man romanced her at various departure stops along the cruise and gave her a ring inscribed with the words YOU BELONG TO ME. In secret, she was supposed to leave the cruise and meet him in Algiers. However, her husband called and begged her to return. So Karen never went to Algiers. BUT, Dr Susan is also counseling a mother whose daughter disappeared from a cruise and who received the same ring, found with her luggage. Wow! Could Karen meet the Dr and bring the ring? She tries, but is pushed into traffic, envelope snatched from her hands, and is in a coma. More witnesses bring more death. Dr Susan works hard with Detective Tom to find the killer. Among the suspects are the author, the grieving mother's lawyer and the husband of Karen. Meanwhile, a rich philanthropist takes an interest in beautiful Susan. Will they find the evil man? This strong film version of Clark's great novel has great suspense, fine performances and lovely scenery. Best of all is Down who is enchanting as the leading lady. You belong in front of the screen so arrange to view this fine mystery flick fans!