Overview
Joaquín Ferrándiz Ventura, born in 1963, is a Spanish serial killer who murdered five young women in the province of Castellón, in Spain's Valencian Community, between July 1995 and September 1996. He became known in the Spanish press as "el asesino en serie de Castellón" (the Castellón serial killer) and sometimes as "el estrangulador de Castellón" (the Castellón strangler). The case drew national attention both for the number of victims and for the lengthy investigation that preceded his arrest in 1998.
Acquaintances and co-workers reportedly described Ferrándiz as outwardly normal, polite and unremarkable, a characterization that contributed to public unease once the scope of his crimes became known. Investigators came to believe he did not know his victims personally but observed them for a period before attacking, selecting women in and around the nightlife areas of the city of Castellón de la Plana.
The Victims
Five women were killed during the roughly fourteen-month period. The first identified victim was Sonia Rubio Arrufat, a young English teacher in her mid-twenties, last seen in the early morning of 2 July 1995 leaving a discotheque in the Benicàssim area. Her disappearance was initially treated as a missing-person case.
Three further victims were Natalia Archelos Olaria, aged 24, Mercedes Vélez Ayala, aged 18, and Francisca Salas León, aged 24. Their skeletonized remains were discovered in early 1996 near a riverbank in the vicinity of Vila-real. The fifth victim, Amelia Sandra García Costa, disappeared in September 1996. The deaths were not immediately connected to a single perpetrator, and it took considerable investigative work to link the cases.
Modus Operandi
Ferrándiz committed his crimes around weekends, targeting women in the nightlife and party areas in and around Castellón. According to the investigation, he stalked potential victims before striking and used ruses to get them into his vehicle. In at least one instance he was reported to have tampered with a woman's car, such as deflating a tyre, in order to approach under the pretext of offering help.
Once a victim was in his control, he restrained and sexually assaulted them before killing them. The pattern of luring women leaving discotheques, combined with the disposal of remains in remote outdoor locations, characterized the series of killings and shaped how police eventually connected the separate cases.
Investigation and Arrest
A key turning point came when a woman targeted by Ferrándiz managed to fight back and escape. The survivor provided police with a physical description and partial information about his vehicle, including part of the licence plate, which directed investigators toward him and prompted surveillance.
Ferrándiz was arrested in 1998 (reported as 29 July 1998). A search of his property reportedly yielded physical evidence linking him to the killings, including a roll of adhesive tape consistent with material connected to one of the victims. The combination of forensic evidence, the survivor's account and witness observations allowed prosecutors to build the case against him.
Trial and Sentence
On 14 January 2000, Ferrándiz was convicted of five counts of murder along with additional offences related to an attempted attack and resulting injuries. He was sentenced to 69 years in prison and ordered to pay compensation, reported as 130 million pesetas, to the victims' families. Under the Spanish penal framework applicable at the time, the maximum effective time served could be substantially shorter than the nominal aggregate sentence.
The conviction closed one of the most notorious Spanish criminal cases of the late 1990s, and the proceedings received extensive coverage in regional and national media.
Imprisonment and Release
Ferrándiz served roughly 25 years in prison. He was released in July 2023, a development that generated significant public concern in Castellón and renewed media attention to the original case. Reporting indicated that following his release he settled in the Basque Country, in the town of Andoain.
The case has continued to feature in Spanish documentary and true-crime programming, reflecting its lasting place in the public memory of the region and the ongoing debate surrounding the release of convicted serial offenders.
