Sony Pictures Classics have dropped the first trailer for the upcoming Watergate-themed Mark Felt – The Man Who Brought Down the White House.

The film centers on “Deep Throat”, the pseudonym given to the notorious whistleblower for one of the greatest scandals of all time, Watergate. The true identity of the secret informant remained a mystery and source of much public curiosity and speculation for more than 30 years. That is until, in 2005, special agent Mark Felt shockingly revealed himself as the tipster. This unbelievable true story chronicles the personal and professional life of the brilliant and uncompromising Felt, who risked and ultimately sacrificed everything – his family, his career, his freedom – in the name of justice.

The upcoming feature has commanded an all-star cast, including Liam Neeson as the title character, Diane Lane, Marton Csokas, Josh Lucas, Tony Goldwyn, Michael C. Hall, Tom Sizemore, Wendi McLendon-Covey, Ike Barinholtz, Bruce Greenwood, Brian D’Arcy James, Kate Walsh, Noah Wyle and Maika Monroe.

Mark Felt – The Man Who Brought Down the White House will debut at this year’s Toronto International Film Festival before releasing to Stateside cinemas on September 29th. It is still to get a UK release date.