"Harry Potter" star Daniel Radcliffe has scored the lead role in the true story terrorism thriller "Imperium" from Atomic Features and Tycor International Film Company. Radcliffe will star as a young FBI agent who goes undercover to find and stop white supremacists trying to make a dirty bomb. The script is co-written by Michael German, an FBI undercover agent who spent years inside United States neo-Nazi and militia groups. Short filmmaker Daniel Ragussis makes his feature directorial debut on the project which will begin shooting this Fall.