John Tusa investigates the work of a lifetime -the completed new edition of The Diary of Samuel Pepys. He talks to Robert Latham , editor of this unparalleled document of Restoration society, who has uncovered previously unknown details of Pepys's life.Peter Ibbotson uncovers 'the weeders'. Are civil servants destroying vital historical evidence when they decide Government records should not be kept?The Historical Cleopatra. As the BBC drama series approaches its climax, Timewatch asks 'Was Cleo patra's reputation as a lustful tyrant really deserved?'