A wealthy family reports a burglary, but when Eriksen investigates there seem to be something fishy about it. Meanwhile a guest of the hotel Gripsholm is found shot in his room.
A suitcase is found but the owner, an old man, seems to have disappeared. A crazy Swede enters different stores about the same time as valuable watches or cameras are stolen.
A woman is found dead in her bathtub. The youth demonstrates for a car-free city center. A train going thru town is stopped with two explosions. Explosives are stolen from Home Guard. All related?