Inside Guantanamo was broadcast on BBC One on Sunday, 5 October, 2003 at 22:15 BST.
Panorama uncovers the true picture of this new system of arrest, detention, interrogation and eventual trial by military commission, a key part of America's war against terror following the events of 9/11.
President Bush, in common with most Americans, is confident that Guantanamo Bay, where 600 or so men are held, is necessary, and makes us all safer.
As he puts it, the detainees are "bad people".
A six month investigation takes reporter Vivian White to Asia, Africa, Europe, and America, to talk to those on the receiving end of American justice, and to those responsible for administering it.
Panorama asks: is Guantanamo justice justified in the light of the new threat facing America and the rest of the world?
Vivian White also travels to Guantanamo Bay where he has access to the soldiers who guard the detainees. But no interviews are allowed with the detainees themselves.
And during part of their tour of the camp where no cameras are allowed, a detainee calls out, in English "Are you journalist?" "I'm from BBC Television" replies White.
He is swiftly banned from the camp, accused of breaking the "ground rules".
So to find out what detention at Guantanamo Bay is really like, Panorama travels to Afghanistan and talks to men who have been detained - for over a year- and then released.
The US authorities stress that detainees are humanely treated. But in an exclusive interview, one of the released men tells Panorama not just about his treatment in Guantanamo Bay but about the US detention centre in Bagram Airbase where he was held before being transported there.
He says that he was tortured - forced to kneel, with his hands shackled above his head, for long periods, and with a gun pointed at his head. The US military spokesman at Bagram, Colonel Rodney Davis says "it's not part of our culture, it's not part of what we do." We didn't come here to bring terror we came here to stop terror," he says.
Reporter: Vivian White
Producer: Fiona Gough
Deputy Editors: Andy Bell, Sam Collyns
Editor: Mike Robinson