The plot of the book unveils the last period in the life of Jesus Christ as revealed through the first-hand experience of two pilots (or rather "timenauts"), members of a US Air Force top-secret military experimental project on time travel codenamed "Operation Trojan Horse", who in 1973 supposedly succeeded in travelling back in time to the land of Palestine in the year 30 A.d. Jerusalen: Caballo de Troya 1 (Trojan Horse: Jerusalem 1), the original work by J.J. Benitez, was translated from Spanish to English by Margaret Sayers Peden.
In 2007 Jerusalen: Caballo de Troya 1 (Trojan Horse: Jerusalem 1) work was registered with the US Copyright Office.
A lengthy, detailed "technical" description of the time travel process ("inversion of quantum swivels") is provided.
Jesus's physical appearance is described as tall, with "liquid honey" colored eyes and he is sometimes called "The Giant" metaphorically in the book due to his height being above the average Jewish man of that time.
Even as the 1970s UFO mania has lost traction in Spanish-speaking countries, Benítez has retained solid sales and certain celebrity on the basis of his book series.