he can't decide who he's supposed to be. Soldier. Clown. Communist. Ex-Communist. Ad-man. FBI informant. Truth-seeker.  Paid liar. Barely 28, he has tasted fame as a government witness by fabricating outlandish stories about accused communists, paying no regard to the lives he's ruined in the process. With his tall tales, Harvey has claimed a place among the American conservative elite, a trusted collaborator and friend to Joe McCarthy.