Who is Anna Stenberg

"There is a vampire in Amiens!
Forced to flee her home when her life is threatened, a young girl disguises herself as a boy called Viktor, finding herself alone and vulnerable on the streets of Dover. She encounters secretive pickpocket Anna, who offers protection and the chance to escape the rigid confines of her life.
Yet Anna is not all she seems. As the two struggle to navigate a turbulent friendship, they are catapulted into a strange supernatural investigation. A family's reputation is on the line after a vampire attack, and Viktor is forced to confront a very different reality to that which she has known. As her narrow world opens up, Viktor has to establish a new persona against the backdrop of citywide vampire hysteria, whilst battling her own personal demons and trying to unravel the mystery of her new companion.