The book offered to the reader by the famous researcher Ernesto Frers contains a fascinating analysis of the relationship between the medieval Templars and pirates. The author convincingly proves that it is often impossible to draw a strict dividing line between them, since after the tragic death of the order, many Templars, obsessed with a thirst for revenge, turned into sea robbers who attacked the ships of the Catholic powers. The book describes in detail the vicissitudes of this long struggle, which, under the guise of pirates, was waged against the Catholic world by secret societies, heirs and continuers of the Templar cause.