We´re all mad here

I´ve begun feeding the cats even if the owner does not want it. They look starved, have lost a lot of weight during the last weeks. We have already had two nights with night frost, I wonder where these cats will spend winter since they are not allowed into their former home any more. I would like to take them in, but my tomcat´s first action was to spray the place where "enemy cat" had spent the night.