Calling Harry Potter fans! Read all about Professor McGonagall in the POCKET POTTERS series, the completely collectible, fully illustrated, must-have official guides to all your favorite characters from the wizarding world.Why does Professor McGonagall give Harry Potter a broomstick? Which animal can she transform into, and what is a Hatstall? Find out all this and much more about Professor McGonagall, everyone's favorite deputy headmistress! Joyfully illustrated, boisterously brilliant, the POCKET POTTERS are collectible, must-have official guides to the Harry Potter books by J.K. Rowling. Whether you are just starting your magical reading journey or you already know your Animagus from your Patronus, each of the POCKET POTTERS is perfect for sharing together or reading independently.