It's been a mere 9 months since a terrorist attack on a gas plant in Algeria claimed 39 lives. Tonight the BBC is catching up with some of the workers who were held hostage before the Algerian forces moved in. British survivors take us through their harrowing ordeal, explaining how they played cat and mouse with their captors and were forced to wear explosives around their necks. This won't make for light Saturday night viewing, but it's a tale that we're pretty sure the world should hear.