A recent widow has invited a group of family friends to her large and secluded country home. However, what the guests don't know is that the reason they've been assembled is that their host suspects one of them might be her husband's killer and she's intent on uncovering the identity of his murderer. As the guests begin to suspect each other, revealing long-kept and sinister secrets in the process, an unknown, black-gloved killer begins bumping them off in a variety of nasty ways.
Patty Shepard
as Lisa Mandel
Simón Andreu
as Harry Stephen
José María Prada
as Martin
Trini Alonso
as Bertha
Dyanik Zurakowska
as Srta. Hoven
Jack Taylor
as Harlan
Paul Naschy
as Ernest
Ramiro Oliveros
as Henry
Doris Coll
as Cecilia Parolli
Alberto Fernández
as Jorge
May Heatherly
as Sylvia Martin
Carmen Maura
as Laura
