Land of Black Gold: Part 1 - S2-E10
Continuity mistake: When Tintin is speaking with the Speedol exec, there is a chart on the wall behind the exec. The last marked point is first located around a centimetre away from the nearest line on the chart. Two shots after this, the point is directly on the line on the chart. A further two shots after, the last marked point is suddenly back to where it was. (00:02:05)