This has got Rod Stieger playing a psycho mom obsessed killer in the big city and George Segal plays the young cop who is taken off the case and then put back on by request of the killer. He thinks Segal understands him. In one good part the killer rings an apartment dressed as a cop and you only hear his voice because he has his back to the camera but the voice is George Segal's not Rod Stieger's. When the camera comes around to him it's Rod Stieger. It would have been more interesting if the killer could actually mimic Segal's voice and have him do it while he's talking to Segal. But it was only thrown in to add to the suspense. The movie is pretty good, well written, well acted, but dated. Which to me is not a bad thing I would give it a 7.5 only because the ending was too quick and neatly packaged.