From Tobruk to Alexandria... they had to make it... even if one of'em was a traitor!

A tense, engrossing adventure set in the 1942 Libyan war zone in the hot Western Desert. A British ambulance officer (John Mills) escapes the siege in Tobruk and tries desperately to get his passengers to safety in Alexandria, where he dreams he will have the luxury of an 'ice cold' glass of beer. His passengers include a stranded hospital nurse, a sergeant-major and a stray South African officer, trying to return to his unit. Despite saving the group from the Germans, something is not quite right about the last passenger. As he begins to undermine the group's stamina using psychological tactics, the British officer begins to suspect he might be a German spy.