Corrado unexpectedly frees them, and afterwards Arnoldo realizes that Corrado is actually Walter. Arnoldo runs into his sister, Aldona, who has come to Marienburg after entering a convent, hoping to find Walter.
After Corrado unexpectedly frees the individuals, Arnoldo discovers that Corrado is actually Walter.  Arnoldo then runs into his sister, Aldona, who has gone to Marienburg after joining a convent in hopes of finding Walter.