NYP2002050110- NEW YORK, May 1 (UPI) - Author Lawrence Schiller discusses his collabration with author Norman Mailer on their book, "Into the Mirror," a fictionalized version on the life of convicted FBI spy Robert Hanssen, during a book promotional event held on April 30, 2002, at New York Barnes and Noble book store. Mailer first wrote the project on Hanssen as a TV movie script that Schiller turned into a novel. ep/Ezio Petersen UPI