That's the name of the original novel, and it's not about the bishops own blood. The bishop is played by E. G. Marshall who delivers a perfect performance as usual, he is ordained for a mission by the Vatican to investigate the circumstances of a possible saint living in Arizona. She is the only daughter of apparently some influential 'godfather' who keeps her in extreme seclusion at home, in their great villa guarded by dogs and armed henchmen. When his boyfriend tries to visit her he gets framed and threatened with having his life ruined unless he scrams from the state for good, which he finds no other choice than to comply with. But the bishop seeks him out and also engages a professional detective (Robert Wagner doing surprisingly well) on the case. As they find her more or less imprisoned in extreme isolation they arrive at the conclusion that she has to be kidnapped to be saved from the vultures jealously guarding her supernatural powers by any means. Robert Wagner's role is actually the most interesting one, a cynical sceptic who doesn't believe in anything and least of all in God, but he accepts the job for the money and is in for some experience he could never dream of and probably never will be able to get the hang of. I never thought a Catholic film would be able to catch my interest, but this one is both intellectually and metaphysically overwhelming. It is absolutely realistic all the way, you will find yourself in the same total quandary of Robert Wagner after the end, while you have to admit that his initiative and decisions in the matter were the only rational ones under the circumstances; and then the Vatican, the pious believers, the superstitious fanatics of blind belief, may say what they want, the bishop may even find himself out of work, but you can't compromise with the sovereignty of human integrity.