The series follows John Porter, a former British Special Forces soldier, who is drafted back into service by Section 20, a fictional branch of the Secret Intelligence Service.
Television drama based on a true story about a group of planespotters wrongly accused of being spies. 14 planespotters are arrested for behaving 'suspiciously' at an air base in Greece and are accused of being spies because of the telescopes, radio scanners and aircraft serial numbers they have in their possession. They plead their innocence but the farce turns into a nightmare when the group are held in squalid Greek prisons.
