Claudia and Anna join Anna's lover, Sandro, on a boat trip to a remote volcanic island. When Anna goes missing, a search is launched. In the meantime, Sandro and Claudia become involved in a romance despite Anna's disappearance, though the relationship suffers from guilt and tension.
Monica Vitti
as Claudia
Gabriele Ferzetti
as Sandro
Lea Massari
as Anna
Dominique Blanchar
as Giulia
Renzo Ricci
as Anna's Father
James Addams
as Corrado
Dorothy De Poliolo
as Gloria Perkins
Lelio Luttazzi
as Raimondo
Giovanni Petrucci
as Prince Godfrey
Esmeralda Ruspoli
as Patrizia
Enrico Bologna
as
Franco Cimino
as
