Liam Neeson stars as Deep Throat in new trailer for 'Mark Felt'

Aug. 30 (UPI) -- Liam Neeson looks to expose the truth regarding the Watergate scandal in 1974 in the new trailer for upcoming political thriller, Mark Felt: The Man Who Brought Down the White House.

Neeson stars as the titular character in the clip, released Wednesday, who is a top official at the FBI and receives the nickname Deep Throat from those he leaks information to at The Washington Post.

"Here's what we know. The men who broke into the Watergate are not the end of this but the beginning," the actor says of the scandal that involved five men breaking into the Democratic National Committee headquarters and which ended with President Richard Nixon's resignation.

"The White House has no authority over the FBI... No one can stop the driving force of an FBI investigation. Not even the FBI," Neeson also says as he grapples with White House officials and with those within his own organization.

Mark Felt, from director Peter Landesman, also stars Diane Lane, Michael C. Hall, Josh Lucas, Tom Sizemore, Wendi McLendon-Covey, Ike Barinholtz, Noah Wyle, Kate Walsh, Bruce Greenwood, Maika Monroe and Brian d'Arcy James and arrives in theaters on Sept. 29.