Looking for evidence of the diaries' origins, Heidemann travels to East Germany, where he meets up with secret police. Meanwhile, Elisabeth finds herself struggling to balance work and a new romance.
Kujau's con goes deeper when Stern demands an expert opinion on the diaries. Meanwhile, Heidemann travels to Boston to buy the publication rights to the diaries from Hitler's cousin, and a young, mysterious man blackmails Elisabeth.
Heidemann accidentally leaves a folder with pages from the diaries with a US media mogul, risking Stern's world exclusive. On the forger's trail, Elisabeth learns her father still isn't telling her the whole truth.