Paula and Philipp have come a step closer to solving the mystery. They now know where the laser beams are coming from. But Eulalia has not returned from her reconnaissance flight. What could this mean?
Where is Eulalia?
After Paula and Philipp have located the laser beams, they inform the optics plant so that the case can finally be solved. But they are most concerned by the disappearance of Eulalia. The two journalists have heard a suspicious cry. Has something happened to Eulalia?
After so much tension the listeners can take a breather with some grammar. The professor deals with the possessive pronouns of the third person singular "sein" and "ihr".