A woman is chased onto the ramparts of a castle by a gun-toting figure. She stumbles and falls to her death. Barbara, the mentally unbalanced owner of the castle, is the main suspect. However, there is no proof against her and the murders continued. But not everything is quite as it seems. The film is set in the Balsorano Castle and is shot in expressionistic black-and-white.
| Actor | Role |
|---|---|
 Mara BerniBarbara MacDonald | Barbara MacDonald |
 Giuliano RaffaelliWalter MacDonald | Walter MacDonald |
 Gianni MediciJohn Brenton | John Brenton |
 Janine ReynaudFrancis | Francis |
 Lawrence TierneyThe Mute | The Mute |
 Luigi BatzellaClark | Clark |
| AAnita TodescoMary | Mary |
| GGenevieve SonéNot listed | Not listed |
| GGabriella MantovaniNot listed | Not listed |
 Rita KleinNot listed | Not listed |