It starts with a tip-off. It's the late 1980s and US Special Agent Dennis Bass is warned about a shipment of suspicious chemicals headed to a secret destination. So he follows the lead - and ends up stumbling into a global plot helping fuel a war. The main suspect? The Gas Man. In the decades since, Special Agent Bass has been locked in an international game of cat and mouse with the man who supplied a dangerous regime with the chemicals to make weapons. Every time Bass thinks he's got his hands on him... The Gas Man somehow manages to slip the net. And he's still on the run today. But after more than 30 years, could his past finally be catching up with The Gas Man?