Shane O'Sullivan is an Irish writer and filmmaker, based in London. He is best known for his work on the assassination of Robert Kennedy. His feature documentary RFK Must Die is the first theatrical documentary on the case since Ted Charach's The Second Gun twenty-five years ago. His book on the case, Who Killed Bobby? The Unsolved Murder of Robert F. Kennedy was published by Union Square Press to coincide with the fortieth anniversary of the assassination on June 5, 2008.