The action takes place in Brittany .Fernand De Keranic wants to latch on to his niece and ward Suzanne's fortune.He tries to do away with her and her lover when she goes for a sail with captain D'Erquy.A tempest rises.The man is given for dead ,but Suzanne is saved, after "struggling against the raging sea". Sadly,.Suzanne has lost her mind and her memory ,and doctor Williams gives her his special Freudian treatment : he films the reconstruction of the drama and shows his work to his patient :the film in the film,which holds her spellbound ,