Hermione and her unit had gone to London to retrieve one of the incendiary devices that the Death Eaters had used on the war's Eastern Front. The explosives were new and catastrophic. Two weeks ago, Voldemort's forces deployed the first one at Romania's Vidraru Dam. Initially, the explosion was small, but it grew exponentially in seconds, wiping out the entire structure and anyone nearby. The Romanian resistance had been using the dam as their base and had lost nearly all the Romanian contingent. Flooding of the dam caused catastrophic flooding in the valley below, and the death toll of wizards and muggles alike was several thousand. Death Eaters had deployed them twice since. Once in Austria - a successful assassination of the Viennese Magical Government - and the second in Dorset. 