TORONTO -- The American Film Co., which seeks to make movies drawn from American history, hits a jackpot of sorts with its first film. The producers came up with a real who-knew? -- one of those stories that freshman history never uncovered -- and they landed Robert Redford to direct a starry cast. Even so, once the dry dust of history gets whisked away, The Conspirator feels like a television movie. Perhaps because a large part of the story -- centering on the conspiracy to assassinate Abraham Lincoln -- takes place in a courtroom, there's lots of talk and not much action.