Agent Hamilton

After training with the Navy SEALs in the US, Carl Hamilton in Sweden goes to work for the CIA on a secret mission.

Hamilton is back in Sweden, where he has a secret meeting with the CIA; a code written on a newspaper provides useful information for Kristin and Birger's research.

Hamilton begins his work at Säpo, to Kristin's great regret. He quickly becomes acquainted with Birger, who helps him uncover that Norling has been hiding secret information in a storage room.

Kristin and Hamilton go to Hamburg to assist the German intelligence service BND in the pursuit of the terrorists, who were traced to the city after being evicted from the vessel.

Haig gives Hamilton an order he can't possibly execute. Kristin gets into trouble privately when marriage breaks in the joints. Hamilton and Sonja head off to her cabin and can finally relax, but a surprise awaits.

Hamilton seeks out Sonja to reveal the truth, but their meeting is prematurely cancelled; Hamilton cooperates with Birger in the search for new evidence, but when an agreed meeting goes awry, he must try to escape from his resourceful enemies.