EXCLUSIVE: Constantin Film and Yellowstone star Cole Hauser‘s American Outlaw Entertainment are partnering on Pale Horse, an action thriller chronicling Scott Payne’s dangerous 28-year career as an FBI undercover agent. Based on the New York Times bestselling true-crime memoir Code Name: Pale Horse by the now-retired Payne and Michelle Shephard, the project tells the story of how Payne embedded deep within the country’s most violent subcultures — including his high-stakes infiltration of the neo-Nazi white supremacist group The Base in Georgia, as well as Operation Roadkill, a harrowing two-year assignment where Payne successfully infiltrated the ruthless Outlaws Motorcycle Club in...