The young code breaker Karnell works in the Swedish intelligence service during the Cold War. Having cracked a secret code he is drawn into a conspiracy that stretches throughout the Baltic Sea. It turns out that there is a leak codenamed Ramona within the organization and now they have to stop Ramona before it wrecks havoc.
Björn Bengtsson
Magnus Roosmann
Annika Hallin
Sten Ljunggren
Svante Martin
