The case for a third man in the assassination of Governor Sir Richard Sharples is presented in a new book on the murders of 1972 and 1973.Yesterday marked the 40-year anniversary of the night when Sir Richard was gunned down with his aide-de-camp Hugh Sayers.‘Justice Denied’, by British author Mel Ayton, implicates but does not name a purported key accomplice to assassins Erskine (Buck) Burrows and Larry Tacklyn.Sure to incite controversy of its own, the book is now available at local stores.The book calls for Bermuda’s government to “reopen the 1972/73 murder cases and bring those who were co-conspirator of Burrows and Tacklyn to justice”.The book also suggests Tacklyn fired the fatal shots against Sir Richard, and blames the assassinations — which included the murder of Police Chief George Duckett in September, 1972 — squarely on the influence of the Black Berets black power group.And it repeatedly suggests there was “sufficient evidence against the ‘third man’ to charge him in a court of law with conspiring to assassinate the Island’s Governor”.However, Mr Ayton writes: “The authorities decided it was not in the interests of Bermuda to bring the ‘third man’ to justice.”His book also charges the Progressive Labour Party with stoking Bermuda’s racial tensions in the 1970s by adhering to “racially exclusive, militant Third World socialism”.It charges the PLP with inviting “radical” speakers to Bermuda to deliver “ideologically-biased versions of black history and culture” while the former administration held power.Mr Ayton based his research on files released ten years ago by the British Foreign Office, and relied extensively on files subsequently provided by Scotland Yard.