As head of the FBI for nearly 50 years, J Edgar Hoover becomes one of America's most powerful men. Serving through eight presidents and three wars, Hoover utilises methods both ruthless and heroic to keep his country safe.

As head of the FBI for nearly 50 years, J Edgar Hoover becomes one of America's most powerful men. Serving through eight presidents and three wars, Hoover utilises methods both ruthless and heroic to keep his country safe.