The 'Caballo de Troya' book series, initiated by Spanish journalist Juan José Benítez López in 1984, presents a fictionalized account of Jesus Christ's final period on Earth. The narrative is framed as a report from a US Air Force pilot, codenamed 'Jason', who allegedly traveled back to 30 A.D. Judea via a top-secret time travel project. This pilot, referred to as 'The Major', recounts his experiences witnessing Jesus's last weeks, based on classified documents.

The series has achieved significant popularity in Spanish-speaking regions and Brazil, with translations into English, Portuguese, French, and Italian. The books delve into detailed descriptions of the supposed time travel technology and the extensive preparations undertaken by the time-traveler, including learning ancient languages. Benítez suggests that events surrounding Jesus's death, such as eclipses and earthquakes, were influenced by extraterrestrial activity. He describes Jesus as unusually tall with distinctive eye color.

While Benítez acknowledges the fictional element of the time travel premise, he maintains that the events depicted contain significant underlying truth. The series has spawned numerous sequels, expanding on the narrative and its themes. Benítez's interest in Jesus's life reportedly stemmed from early claims about the Shroud of Turin. The series has also faced accusations of thematic similarities to revelations found in 'The Urantia Book' in a prior work by the author.

The 'Caballo de Troya' series is presented as a non-fiction account, though the author concedes the time travel aspect is fictional. The core narrative unfolds through the testimony of a retired US Air Force pilot, known as 'The Major' (and later 'Jason'). This pilot claims to have participated in a clandestine military operation, 'Operation Trojan Horse', in 1973. This operation purportedly involved a successful journey to Judea in 30 A.D. using advanced time-travel technology, described technically as 'inversion of quantum swivels'. The pilot underwent rigorous training, including mastering Aramaic and Greek, and was equipped with protective measures to prevent biological contamination during his mission.

Within the narrative, the series introduces esoteric interpretations of historical and religious events. It suggests that phenomena associated with Jesus's death, such as seismic activity and celestial anomalies, were linked to extraterrestrial influences. The physical description of Jesus is also notable, depicting him as significantly taller than average for his time, with unique eye coloration, leading to him being referred to as 'The Giant'. These elements contribute to the series' unique blend of historical narrative and speculative, mystical inquiry.

Juan José Benítez López has maintained that despite the fictional framework of time travel, the core events and revelations within the 'Caballo de Troya' books are rooted in reality, stating they contain 'more truth than people think'. This assertion has allowed the series to maintain a dedicated readership and considerable success, particularly in the Spanish-speaking world. The author's initial interest in the 'real' life of Jesus was reportedly sparked by early research into the Shroud of Turin. The series has generated a substantial number of sequels, further exploring its thematic content.