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.