book provides a narrative that reconstructs the Saracens' incursion into Lyon and the surrounding areas, detailing the motivations behind their invasions and the reactions of the local population, especially the clergy. Vingtrinier examines various historical sources, ranging from ancient chroniclers to local traditions, to piece together the events leading up to battles, their aftermath, and the implications these invasions had on the culture and history of the region. He suggests that, despite being viewed primarily as plunderers, the Saracens had a lasting influence on local agriculture, trade, and even language that persisted long after their military campaigns ended. The text presents a vivid picture of a tumultuous time and underscores the lasting scars these invasions left on local communities. (This is an automatically generated summary.)