Theodora and Dexter must dispose of a cursed beetle and thwart a lurking detective in this second book in the sweet and spooky illustrated middle grade series that's The Addams Family meets Nancy Drew. After her many adventures, ten-year-old Theodora Hendrix feels confident she can handle anything... Until the unpleasant Inspector Shelley and her pet rat, Ratsputin, come to make trouble and spy on the Monster League of Monsters. Theodora recruits her friend Dexter to help her keep the detective off the scent of her monster family.

But when Theodora uncovers a cursed beetle, their mission seems impossible. Can they destroy it without attracting the inspector's attention?