- Country: Spain
- Genres: Mystery, Thriller
- Release: 1973-09-24
- Director: Javier Aguirre
- Writers: Javier Aguirre , Alberto S. Insúa
- Language: Spanish
- Stars: Patty Shepard , Simón Andreu , José María Prada , Trini Alonso , Dyanik Zurakowska , Jack Taylor , Paloma Cela , May Heatherly , Doris Coll , Carmen Maura
- Runtime: 95 min
- Awards: 1 win
- AKA: The Killer Is One of 13 (Canada) , El asesino está entre los trece (Spain) , The Killer Is One of Thirteen , El asesino está entre los trece , The Killer Is One of 13 (United States of America)
- Plot: A widow invites thirteen guests to stay at her rural mansion. She reveals to them that she suspects whoever killed her husband must be one of them. Soon, they too are being murdered one by one.
- IMDB:tt0069734
El asesino está entre los trece Cast · · · ALL
Javier Aguirre
Director
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
May Heatherly
Sylvia Martin
Carmen Maura
Laura
Paloma Cela
Elena
Eusebio Poncela
Francis
Eduardo Calvo
Guillermo
Rosa de Alba
Elena
Blaki
The Gardener
Marisol Delgado
The Maid