Complex sentence: As the two friends assassinate Danish Nazis and collaborators, they also find themselves in deadly duels with treacherous handlers, competing resistance groups, and a "femme fatale" (played by Stine Stengade) who might be a double (or even triple) agent.
Split into simpler sentences: As the two friends assassinate Danish Nazis and collaborators, they become involved in increasing ambiguity. Doubt arises, and Flame and Citron must also deal with competing resistance groups, an internal traitor, and a "femme fatale" (played by Stine Stengade) who might be a double (or triple) agent.