Glenn Ford is quite effective in this conspiracy thriller, He is the middle-aged "Prof. Patterson" who is suddenly faced with quite a dilemma. Many years earlier, he had joined an almost Masonic style group called "The Bell". This is a pretty internecine organisation with tentacles spread throughout the American establishment and woe betides anyone who crosses it. Every now and then it makes demands of it's members, and it falls to "Patterson" to dissuade lifelong friend "Dr. Horvathy" (Eduard Franz) from taking a prestigious position - else he will have to reveal some sensitive information abo... read the rest.