Voyeur / Eye Of The Beholder

"The Eye", a British secret service agent, investigates the blackmail of an American senator's son. A certain Joanna is said to be the number one suspect. When she commits her first crime, the scene is so quick that the Eye just has time to photograph her. The shock he feels is not so much that of the murder he discovers but rather the development of the photo, when the ghostly image of his own daughter is superimposed.