The third and final chapter of the Mudblood series finds Muriel Warrington being held hostage by The Sisters, as Merlin and Alvin face uncertain dangers during their rescue mission. A greater evil will emerge, and darker memories are revealed. The fight for Voldemort’s horcrux, in the shape of Helga Hufflepuff’s cup, will reach a conclusive end as darkness and light battle for the fate of the Wizarding World.