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El asesino está entre los trece (1976)

A widow invites a number of guests to stay at her mansion. She reveals that she knows that one of the group killed her husband. Soon they too are being murdered one by one.


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Cast overview, first billed only:
Patty Shepard ...
Lisa Mandel
Harry Stephen
José María Prada ...
Trini Alonso ...
Dyanik Zurakowska ...
Srta. Hoven (as Dianik Zurakowska)
Paloma Cela ...
Mujer de Jorge
May Heatherly ...
Sylvia Martin
Doris Coll ...
Cecilia Parolli
Laura, mujer de Guillermo
Alberto Fernández ...
Eduardo Calvo ...
Rosa de Alba ...
Marisol Delgado ...

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A widow invites a number of guests to stay at her mansion. She reveals that she knows that one of the group killed her husband. Soon they too are being murdered one by one.

Plot Summary | Add Synopsis







Release Date:

3 May 1976 (Spain)  »

Also Known As:

The Killer Is One of Thirteen  »

Company Credits

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Technical Specs


Sound Mix:



Aspect Ratio:

1.85 : 1
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Did You Know?


May Heatherly was dubbed by Mari Ángeles Herranz in the Spanish version. See more »

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User Reviews

Spanish Giallo dealing with a group of guests find themselves embarking on a mysterious criminal spree
25 May 2017 | by (Santander Spain) – See all my reviews

This exciting film contains tension , thriller , drama , mystery , plot twists and shocks , including decent scares with tense killing sequences especially in its final part , in a creepy denouement . Slowly paced flick with a fairly suspenseful and horrifying story in which a killer series undergoes a killing spree by means of brutal executions . This thrilling picture concerns about some higher-class people are gathered by a widow , Lisa Mandel(Patty Shepard) , in an isolated mansion under mysterious circumstances and one by one they are murdered , each according to a peculiar relationship with Carlos Mandel , the formerly deceased husband by aviation crashing . The beautiful widow invites a number of guests to stay at her residence , these are the followings : Francis , widow's cousin (Eusebio Poncela) , his mother (Trini Alonso) , the playboy Harry Stephen (Simón Andreu) , Martin (José María Prada) and lover , Srta. Hoven (Dyanik Zurakowska) , the suspicious painter , Harlan (Jack Taylor) , Guillermo (Eduardo Calvo) , his wife Laura (Carmen Maura) , among others . Furthermore , there appears servants , gardener (Blaki) maid (Marisol Delgado) and butlers (Ramiro Oliveros , Paul Naschy) . Later on , the widow reveals that she knows that one of the group killed her husband and she is attempting to search for hubby's murderer . As he really didn't die by plane crash , but he deceased by a sleeping pill that caused the deadly accident when he was crossing the Mancha Canal . Before dying , the husband to withdraw money from the bank : 10.000 pounds , this cash is , day-present, missing . Soon they are being too murdered one by one . As they are being killed by cutting car brake line , slitting , garrotting , hanging , and stabbed in the chest . Meanwhile , at the mansion occurs the regular loving conflicts , including sexual scenes , as sex with butler , as sex with a maid , triangles , jealousy , and betrayals . As the guests are astonishing about the inexplicable deaths are happening . The premise is the following : who's the killer among the suspicious guests ?

The plot is plain and simple , regarding a group of wealthy people are invited by a widow and shortly after , realizing that they are being murdered one by one . This Giallo contains suspense , thrills , chills , intrigue and plot twists . Aguirre designs a mediocre thriller , including some regularly staged murders plenty of startling visual content with blood and gore , though was submitted to limited censorship in Spain . This is a customary slasher in which mystery , tension , suspense appear threatening and lurking in every room , corridors and luxurious interior and exterior . The picture packs atmospheric blending of eerie thrills and creepy chills combined with a twisted finale . It displays lots of blood but it seems pretty mild compared to today's gore feasts . The staged killings are the high points of the movie , they deliver the goods plenty of screams , shocks and tension . This "The Killer Is One of Thirteen" contains usual ingredients of the ¨Gialli¨ sub-genre : suspenseful intrigue , twisted killings , violence , sadism , physical abuse , and some female nudity . Based on a script by Alberto Insua , soon after Javier Aguirre adapted the screenplay . The main excitement lies in watching what new and amazing killing to be committed by a strange executioner , a black gloved killer . Sensationalist murder pieces , including by axe in the head , killed in shower , stabbing , asphyxiate , head bashed in , decapitation and grisly slashing . However , the film results to be slow-moving and extremely talking , for more of a hour , there happens nothing . The Giallo plot is mingled with the typical Agatha Christie mystery developed in her known novel ¨Ten Little Indians¨ that had several cinematic adaptations , such as 1965 rendition by George Pollock , 1975 recounting by Peter Collinson and 1989 retelling by Alan Birkinshaw . The cast is pretty good , plenty of known Spanish actors , such as : the gigoló Simón Andreu , Eusebio Poncela , Alberto Fernández , May Heatherly , Paloma Cela , Jack Taylor , Dyanik Zurakowska , Eduardo Calvo, Jacinto Molina , Ramiro Oliveros and several others .

The motion picture was regularly directed by Javier Aguirre and it has several flaws , gaps and failures . Javier Aguirre has filmed with all of the power and sensationalism at its command but in exploitation style . Father of director Arantxa Aguirre with first wife , actress Enriqueta Carballeira , being his second wife Esperanza Roy , both of whom usually play his films . Javier is a craftsman , expert on comedies such as : ¨El Astronauta¨, ¨Los Que Tocan El Piano¨ , ¨Locuras De Parchis¨ , ¨Los Chicos Con Las Chicas¨, ¨Soltero Y Padre En la Vida¨, ¨Soltera Y Madre En La Vida¨, ¨Rocky Carambola¨, ¨Martes Y Trece¨. Aguirre also made quite a few terror movies as ¨Gran Amor Conde Drácula¨, ¨Jorobado De La Morgue¨ , ¨Asesino Está En Sus Trece¨. In addition , he directed various ¨Avant Garde¨ films.

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