The lady rogue
(Book)

In 1937, teenaged Theodora Fox and her crush, Huck, set out through the Carpathian Mountains seeking her missing father and the cursed ring of Vlad the Impaler, which he was seeking.

1937. Theodora has read every book in her father's library, has an impressive knowledge of the world's most sought-after relics, and has all the ambition in the world. What she doesn't have is her father's permission to join him in his treasure hunts. His protégé Huck Gallagher, gets to go instead. When Huck returns from an expedition without her father, the two set out to rescue him. Armed with her father's travel journal, they must find a legendary and magical ring that once belonged to Vlad the Impaler. But in the misty Carpathian Mountains, they aren't the only ones searching for the ring. A secretive occult society is hunting for it... and will go to any lengths to possess it. -- adapted from jacket