When John Lennon was gunned down on December 8, 1980, his killer had one unlikely ally in NYPD officer Stephen Spiro -- or so he thought. Spiro, the first cop on the scene of Lennon's murder, acted cordially to the gunman, partially out of a sense of "professionalism" but mainly to establish a connection that would lead to a confession and also unearth details that never came out at the trial. Now Spiro has finally decided to sell four letters that the killer wrote to him from jail, auctioning them off partly for charity and partly to pay his medical bills, and the details of those letters are disturbing as well -- apparently actor George C. Scott, JFK widow Jacqueline Onassis, and CBS news anchor Walter Cronkite were all judged to be equally as "phony" as Lennon, and therefore equally worth assassinating. "Lennon sat in a bed and imagined," wrote the gunman, comparing him to the more activist singer Harry Chapin. "Why wasn't he rolling up his denims and getting busy?" Lennon's killer was denied parole for the seventh time last August.