The trailer for Nothing But the Truth has appeared online, it's the film that tells the story of Valerie Plame, the wife of a U.S. Ambassador who is revealed as a CIA agent, the reporter Judith Miller who broke her story, and the web of lies and deceit that lay behind the story.

Of course it's a fictionalised story, so it won't all be the exact truth, but regardless the film is looking well cast, well acted and the trailer looks powerful, although it doesn't feel like a final cut.

There's something not quite right watching the trailer, you can see if you agree. The drama and the points used to tell the story all work well, but the music doesn't quite blend in, and watching it I felt that this was an early release, perhaps too early. However I don't think it harms the film one little bit.

Nothing but the Truth is based on the real life events of Valerie Plame, the wife of US Ambassador Joe Wilson, who was exposed as a CIA agent after her husband wrote a story for the New York Times that criticised the Bush administration for the war in Iraq.

The reporter, Judith Miller, went to jail to protect her sources, while the former Chief of Staff to Vice President Dick Cheney, Lewis Libby, was convicted of perjury and President Bush commuted his thirty month jail sentence.

It feels like another “get it in there” moment for George Bush and his administration, as well as politics and spying in general.

It stars a powerful cast too, Kate Beckinsale as the journalist, Matt Dillon as the prosecutor on the case, Vera Farmiga as the CIA agent who is revealed, Edie Falco as the editor of the newspaper to which Beckinsale's character belongs, and Alan Alda as the attorney who tries to defend the journalist and release her from prison.

Watching the trailer from Moviefone (which is currently unavailable) through Jo Blo (where it is available), you do get the sense that this is going to be a very powerful film indeed, and something that's going to deliver a strong personal and political message. Here's the trailer: