
Oliviero is a drunk, burned-out writer who amuses himself by hosting orgies at his grand country manor and humiliating his wife Irina. When a number of women are murdered in grisly fashion, Oliviero becomes a prime suspect.


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
Lisa Mandel

Simón Andreu
Harry Stephen

José María Prada
Martin

Trini Alonso
Bertha

Dyanik Zurakowska
Srta. Hoven

Jack Taylor
Harlan

Paul Naschy
Ernest

Ramiro Oliveros
Henry

Doris Coll
Cecilia Parolli

Alberto Fernández
Jorge
The Killer Is One of Thirteen is a mystery, horror, thriller film released in 1973 exploring themes of guest, house, stalker, murder, whodunit. Directed by Javier Aguirre, it stars Patty Shepard, Simón Andreu, José María Prada. 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.
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