Season 4

Max goes undercover in a casino laundering black money. During a police raid, he's torn between loyalty to the casino boss and aiding the investigation. When the boss’s daughter is kidnapped to halt the raid, Max prevents a train robbery, rescues the child amid a high-octane chase, but his cover is severed when Claudia is captured 

Police officers Nicola and Sven have discovered that Robert Brock, the head of the LKA, is reselling confiscated weapons. To get certainty, they observe him making a deal, but are discovered in the process.

Max is framed after a bank robbery with Claudia & Dobbs presumed dead. Sent to prison, he infiltrates a criminal cell led by Michalski to uncover a plot by female terrorist “Marcos” planning a gas attack. He escapes to stop the attack .

A journalist has sneaked into a refugee organization to prove that its president, Steinmann, is pocketing donations. Eventually, she manages to copy evidence from Steinmann's computer.

Chief Inspector Führmann blackmails the clown and forces Max and Dobbs to travel to Colombia to arrest the wanted criminal Karl Schall. He has barricaded himself in the luxury mansion of his friend El Cordon.

Claudia manages to gain access to El Cordon's fortress-like estate, where Karl Schall is hiding. When Claudia's cover is blown, Max and Dobbs are forced into a breakneck rescue operation.