Eagle is the fifth book in the Five Ancestors series, which I’ve thoroughly enjoyed. Escape from Lucien is another continuation, since it’s the sixth book in the Amulet series of graphic novels. But The Secret Key is a series starter, so I can talk about that one! Agatha is smart, observant, and steeped in the fiction of her namesake, Agatha Christie. In fact, Hercule Poirot is her imaginary friend. But few people appreciate her little investigations. But when a new case presents itself, Agatha knows it’s her big chance to prove herself.