When his butterfly-collector father is swindled to within an inch of his life, a vengeful Hector leaves the city of Urbs Umida in pursuit of a fiendish villain with a glass eye. The trail leads to Withypitts Hall, a forbidding Gothic mansion as warped as its inhabitants and their secret schemes. Soon Hector finds himself embroiled in mysterious deeds more poisonous than his worst imaginings, but every twist and turn brings him closer to his revenge . . .