Former investigative reporter Cheri Seymour, a San Diego County resident, has written a non-fiction thriller to end all thrillers. The Last Circle is ripped from the headlines of one of our era's most controversial murder scandals: the killing of investigative journalist Danny Casolaro, whose discoveries about a shadowy organization that he dubbed "The Octopus" reached into the Mafia, the Cali Drug Cartel, and even the U.S. Department of Justice. Casolaro, a Washington D.C. journalist, began his probe with an investigation into the theft of a revolutionary new software program that was actually the forerunner of artificial intelligence. It was called PROMIS. Casolaro worked closely with Bill Hamilton, owner and developer of the PROMIS software, to locate and identify the persons responsible for illegally modifying the software, installing a backdoor or Trojan Horse in the program, and selling it worldwide to foreign countries -- thus allowing the U.S. government to secretly monitor intelligence operations in those countries. In August 1991, Casolaro filled his briefcase with documents and headed out to Martinsburg, Virginia to "bring back the head of the Octopus," according to his closest friends who said he was "ecstatic" about something he had recently uncovered. He never returned. He was found dead at a Martinsburg hotel on August 10, 1991. The coroner ruled his death a suicide, but all his documents and briefcase were missing from the hotel room and never recovered. Three months after Casolaro's death, Seymour jumped on the investigative trail he left behind, and 18 years later, his story and Seymour's are revealed in this riveting book.