Michael Portillo takes a look through the national archives to discover different stories that have been hidden in previously classified documents.
History's Greatest Mysteries78%
The Watcher70%
Beyond Belief: Fact or Fiction72%
Diners, Drive-Ins and Dives68%
A Haunting74%
American Experience65%
White House Plumbers62%
Roots73%
Creepshow74%
VICE70%
The Terminal List79%
Thriller66%
The Terror73%
Frontline66%
The Twilight Zone67%
The American Revolution59%
Mrs Wilson70%
Gaslit68%
Grant71%
Expedition Unknown80%
