Tall and flame-haired, Boudicca is devoted to Andraste, the Iceni’s fearsome patron goddess, known for her raven familiar and swirling blue tattoos. The Roman tax collector Catus Decianus, expecting weakness in a female ruler, launches a devastating attack on the tribe’s stronghold. Boudicca and her family barely survive—but they refuse to bend the knee. Drawing on the dark power of Andraste and the fiery wrath of her sister goddess Brigantia, Boudicca and the Iceni vow to cast the Romans out of Britain once and for all. In the autumn when the Romans gather to trade, Boudicca’s armies—now 250,000 warriors strong—sack the wealthy cities of Camulodunum and Veralamium. As the snow falls, the Celts retreat to a hidden valley to plot their assault on Londinium, the heart of Roman Britain. But in the jagged ice of winter the Druid Rhan foresees a tragic end to Boudicca’s rebellion.