Marcus parts 1 &2 are 19 and 20 (final one) Gaspard's brother is in the bar here and only comes in the scenario way inside season 2, NOT in episode 2. We only miss the link with the end of episode 18 storywise.
As an officer of the General Inspectorate arrives to investigate a policeman accused of corruption, the latter commits suicide, which complicates the case even further. The Chief Superintendent has no choice but to side with the men and women under his orders.—TV5MONDE Europe