Herzog is alone, now that Madeleine has left him for his best
friend. Solitary, in a crumbling house which he shares with rats,
he is buffeted by a whirlwind of mental activity. People rumoured
that his mind had collapsed. But was it true? Locked for days in
the custody of his rambling memories, Herzog scrawls frantic
letters which he never mails. His mind buzzes with conundrums and
polemics, writing in a spectacular intellectual labyrinth. Is he
crazy, or is he a genius?..