Group members learn they are part of a dangerous experiment.
Thaddeus is disappointed that Charlotte finds him.
The children notice that Ruby is suddenly full of energy.
The family takes a well-deserved rest at a Irish castle and encounters some eccentric characters, Ma Moon and Fin Bar.
The children and their father are reunited.
The children believe that the island is haunted.
The children discover another runaway.
The children face challenges when left in the care of evil-minded relatives.
The children return the prince to the king.
Thaddeus is kidnapped by the king.
The children find the kidnapped prince in a nearby house.
The children search for a kidnapped prince.
The Silverskulls are convinced to set the family free when it appears Peggy has caused an eclipse of the moon.
The children are also captured by the Silverskulls who live in the mountain.
The native guides are convinced that evil spirits of the mountain are responsible for Thaddeus and Charlotte's kidnapping.
The group is drawn to a mysterious mountain.
Charlotte is in danger of becoming the first of the living dead.
Clovis is planning to make a world of the living dead.
Charlie is kidnapped by Block.
Thaddeus discovers a rare species of spider that is soon stolen by a group of sinister men.