|Bibi Andersson||Alma, The Nurse|
|Liv Ullmann||Elisabeth Vogler, The Actress|
|Gunnar Björnstrand||Mr. Vogler|
|Margareta Krook||The Doctor|
|Jorgen Lindstrom||The Boy, Elisabeth's Son (uncredited)|
Famed stage stress Elisabeth Vogler suffers a moment of blankness during a performance and the next day lapses into total silence. Advised by her doctor to take time off to recover from what appears to be an emotional breakdown, Elisabeth goes to a beach house on the Baltic Sea with only Anna, a nurse, as company. Over the next several weeks, as Anna struggles to reach her mute patient, the two women find themselves experiencing a strange emotional convergence.