Eryk--but that is not his real name--and his mother, Lena, are two of the deadliest and rarest magic-using Grishas in the world: amplifiers. They must not only stay away from non-Grisha human settlements, but also keep the secret of their amplification powers away from their fellow Grishas. If the other Grishas in their latest camp find out, they could kill them and wear their bones to amplify their own powers. No place is safe, and no one can be trusted--but Eryk is just a kid, and wants to trust the beautiful girl he meets in their latest Grisha camp.

"Grishaverse."