possible that after Prine learned the anonymous letters had received had been created by Kupcinet, that and their unresolved argument gave him a motive for murder. In addition, both Rubin and Hathaway, the two men who had possibly been the last to see her alive, were friends of Prine. They were also eventually named as suspects. In 1988, Kupcinet's father published a memoir in which he revealed that he and his wife Essee believed that Prine had nothing to do with their daughter's murder. He was suspicious of a person, still alive when he wrote his memoir, who had no connection to Prine. Alleged connection to JFK Kupcinet's death was first mentioned in connection with the John F. Kennedy assassination in 1967 by researcher Penn Jones Jr. in the self-published book Forgive My Grief II. Jones cited an Associated Press wire service story about an unidentified woman who placed a phone call from the vicinity of Oxnard, California, about fifty miles northwest of Los Angeles, twenty minutes before the assassination occurred in Dallas, Texas, claiming this woman was Kupcinet. Jones alleged that "Karyn Kupcinet" had attempted to warn someone of the impending assassination after being given this information by her father Irv, who himself had allegedly been given advance notice by Jack Ruby, the Dallas nightclub owner who fatally shot Kennedy's accused assassin, Lee Harvey Oswald. Jones speculated that Irv may have met Ruby in Chicago in the 1940s. Jones speculated Karyn had been murdered by representatives of the Italian-American Mafia as a message to her father to remain silent about why Kennedy and Oswald had been shot. Irv Kupcinet denied that he or his daughter had prior knowledge of the assassination or of Oswald's death. This was supported by Kupcinet's friends, including Prine, actor Earl Holliman, and Holliman's then-girlfriend, all of whom traveled to Palm Springs with Karyn on November 22. Kupcinet reportedly seemed upset about media coverage of the shootings while in Palm Springs. She did not reveal any foreknowledge of the events. In 2013, the Ventura County Star commemorated the 50th anniversary of the Kennedy assassination with a long article about the unknown woman who had formed the basis of Penn Jones' conspiracy theory. Citing FBI documents that were declassified decades after the assassination, the Star claimed that two telephone operators with General Telephone Company who listened to the unknown woman gave the FBI a description of