God's Spy (Espía de Dios in Spanish) is a bestselling thriller novel by Juan Gómez-Jurado originally published in Spain in 2006,[1] and in English in 2007.

The plot is set in the Vatican, where, in the aftermath of Pope John Paul II's death, the hunt for a serial killer and sex offender — and former priest — reveals a chilling conspiracy.

[2] It is a detective story where the psychological portrait of Victor Karosky, the serial killer (whose name is known from the first line of the book) is the spine of the novel.

From the book cover: In the days following the Pope's death, a cardinal is found brutally murdered in a chapel in Rome, his eyes gouged and his hands cut off.

Called in for the grisly case, police inspector Paola Dicanti learns that another cardinal was recently found dead; he had also been tortured.