The opening scene of this movie has a priest whistling to himself as he walks. Camera point of view shot from above as he walks under a bridge. Without editing, the camera turns and the priest is already on the bridge, walking towards the camera! This uneasy scene sets the audience up for the rest of the film. This man is a killer. A Mother obsessed killer. Rod Steiger enthralls the audience in a series of superb disguises intended to fool his victims into trusting him. George Segal plays the cop on his trail, and, in scenes reminiscent to "Rollercoaster",also a Segal movie,the lunatic calls him up and gloats about his accomplishments. A classic slice of dark, dark comedy.