The Addams Family meets Nancy Drew in this delightfully spooky illustrated middle grade mystery series following a young human girl determined to protect her monster family from discovery--all three books now available together in one collectible paperback boxed set! The first rule of the Monstrous League of Monsters is to keep monsters hidden from humans. But when zombie George and his cat companion Bandit find an abandoned human baby, they can't leave her to be eaten by hobgoblins. So they spirit her home where she quickly becomes part of the family.

Fast-forward ten years, and young Theodora doesn't seem too scarred by her monstrous upbringing. Then a series of anonymous letters, cursed beetles, and shadowy creatures threaten to harm Theodora's beloved monster family. But Theodora and her best friend, Dexter, will do whatever it takes to make sure their secret remains safe.

This monstrous paperback boxed set includes: Theodora Hendrix and the Monstrous League of Monsters Theodora Hendrix and the Curious Case of the Cursed Beetle Theodora Hendrix and the Snare of the Shadowmongers