when dr warthrop goes hunting the holy grail of monstrumology with his eager new assistant arkwright he leaves will henry in new york finally will can enjoy something that always seemed out of reach a normal life with a real family but part of will cant let go of dr warthrop and when arkwright returns claiming that the doctor is dead will is devastatedand not convinced determined to discover the truth will travels to london knowing that if he succeeds he will be plunging into depths of horror worse than anything he has experienced so far his journey will take him to socotra the isle of blood where human beings are used to make nests and blood rains from the skyand will put will henrys loyalty to the ultimate test