S2, Ep 6: Land of Black Gold. When cars start exploding in their home country and it leads to a soon-to-be serious oil crisis. Tintin, along with Thompson and Thomson travel to the Middle East to get to the bottom of the situation.
Well, nobody can say Tintin was never topical and this mystery feels strangely relevant in the current situation. But who could be behind it all? Eco fanatics? Shady Arabs? Or a sinister businessman with his own agenda? I couldn't speculate but it's up to Tintin to find out...