Kleo and Sven form a wary alliance. Anne visits Kleo claiming to look for her grandfather. After failing to kill her, Uwe sets up a meeting with Kleo.

Kleo follows a lead to Belgrade, where Sven makes a romantic connection. Thilo is on a mission of his own.

Kleo heads to Mallorca, chased by Sven. She infiltrates a party and uses a toxin to paralyze Wieczorek's wife, leading him to make a deadly confession.

With Min and Uwe on her tail, Kleo bribes a little girl to deliver a poisoned Bundt cake to Mielke's jail cell. After a showdown, Kleo digs up a letter.

After Andi is wounded by Kleo, a double agent prevents him from unpacking the conspiracy behind the red suitcase. Sven, Kleo and Min move in on a mole.

Thilo discovers that his soulmate is not who she seems. Uwe receives a new target and uses the opportunity to set a deadly trap for Kleo.

Uwe is left cleaning up a mess. Sven unmasks a double agent, while Kleo heads for her family cabin in search of answers.

With the future of Europe hanging in the balance, Kleo prepares herself for a final confrontation in Moscow.

Severely wounded in a shooting, Kleo has a revealing flashback. With the ominous red suitcase seemingly in hand, Sven shares a devastating truth.

Kleo and Sven arrive in Chile, where they track down an elusive Jorge. Later they tangle with Ramona, whose water breaks at an inopportune moment.

Top Stasi agent Kleo Straub liquidates a target in a West German nightclub. Soon after, she must face a life-changing betrayal and a heartbreaking loss.

Determined to find her files, Kleo tracks down her former handler and makes her way into Stasi headquarters. Later, she seeks out Thilo in a dance club.

A surprise visit from her mother puts Kleo back on the trail of the red suitcase, which could have an unsettling link to her childhood.

Kleo plans a daring heist to retrieve classified files from the KGB, unaware that Sven is after them as well.