Hotel Manager Lukas Franke is implicated as the mastermind a cyber-attack on Berlin.
Lukas continues to try to find out who is targeting him; mounting evidence makes his wife doubt him.
Lukas is questioned by the police, and learns that they believe he's planning further attacks.
Lukas Franke's online identity is hacked, implicating him in a cyberattack on Berlin.
Lena reveals her connection to Lukas, and opens up about her past.
Jansen and Siebert begin to believe that Lukas is telling the truth, and widen their investigation.
Matthias Schweighöfer
Lukas Franke
Alexandra Maria Lara
Hanna Franke
Jessica Schwarz
Nelly Hallaska
Hannah Hoekstra
Angel
Michael Landes
Admiral Bruce Gardner