Well over half the U.S. population does not believe that Lee Harvey Oswald acted alone. This has been verified in many polls over the past 40 years. Among the millions who suspect other parties at work is Joan Mellen, a woman with a diverse array of credentials: English and creative-writing prof, author, Japanese-cinema critic, biographer. And now, investigative journalist: What began as a biography of former New Orleans district attorney Jim Garrison turned into a sharing of his obsession with JFK’s assassination. Over a thousand interviews later, she produced the colossal A Farewell to Justice: Jim Garrison, JFK’s Assassination, and the Case That Should Have Changed History. Garrison, the only public official who went as far as indicting a suspect, is a controversial figure whose suspicions of CIA deputy director for plans Richard Helms guide Mellen’s hypotheses. She did by all accounts an admirable job digging up information and sources that have been denied their place in the public record, and will offer further lecture and discussion in this two-hour event. Funny thing, conspiracy theories: You never know when one might be right.