Forget Me Not

Anamae is drawn into a world which shatters everything she knew to be true. The first in the trilogy of the brilliant YA Collective series. followed by REMEMBER ME and NEVER FORGOTTEN.
Since her mother vanished nine years ago, Anamae and her father have shared a quiet life. But when Anamae discovers a brooch identical to her mother's favorite pendant, she unknowingly invites a slew of trouble into their world.
The jewels she finds are not just jewellery, they're a highly developed technology capable of cloaking the human form. Triggering the jewellery's power attracts the attention of a secret society determined to confiscate the device - and silence everyone who is aware of its existence. Anamae knows too much, and now she's Enemy Number One. She's forced to leave her father behind when she's taken in by a group determined to keep her safe. Here, Anamae searches for answers about this hidden world.
With her father kidnapped and her own life on the line, Anamae must decide if saving her dad is worth risking her new friends' lives. No matter what she does, somebody is going to get hurt.