This was an old show. Don't think there are famous actors in there or at least I did not recognize any. I only remember a bit of the plot. The story is around the idea of the butterfly effect i.e. What we do has consequences on people we may not know. There was one scene where I think the husband and wife were quarelling and the wife was in the kichen with a knife which caught the sunlight and the light flashed into the eyes of a neighbour whivh then led to other things happening. Sorry I can't provide more information but I have been searching for years to get the title of this show. Please help if you can.