PL and TB - I understand what you're saying. Of course Paulie and Carlo had to know. And you would assume Fredo would as well. My problem with that is that both Paulie and Carlo were hard men. Paulie was a button and Carlo was capable of beating his pregnant wife, which is obviously as low as you can get. They both had that capacity for ruthlessness that I believe Fredo was missing. Although I could see Fredo, in his quest to make a name for himself, trying to insert himself into some back-door negotiating, I can't picture him cold-bloodedly setting up his brother and his wife (with the open drapes, there was an excellent chance that Kay would be shot as well) to be murdered. I just can't picture him deciding to make Anthony and Mary orphans.