Desperate housewives?

so, porter scavo.... does anyone else think that he will either kill dave or be the one to find out what he is up to? i think it was pretty dumb of dave to tell the detectives that it was porter who set the fire though... i mean, by doing that, the scavos are gonna have it in for dave and try hard to find out what he is up to... okay, well i guess we no what he is up to: he's trying to kill mike, but what we don't know is WHY he is trying to kill mike. what did mike ever do to make a manhave it in for him? i don't know, i just wanted to know what all you other desperate houswives fans think. thanks!