Ace of spades

Ace of Spades by Faridah Àbíké-Íyímídé
 
 Gossip Girl meets Get Out in this high-octane thriller that became an instant New York Times bestseller. At Niveus Private Academy, an anonymous texter known as "Aces" begins exposing the darkest secrets of two students: talented musician Devon and head girl Chiamaka. As their private lives are thrust into a devastating spotlight, they realise someone is playing a dangerous game designed to divide and conquer.
 
This unputdownable mystery offers a powerful, thought-provoking look at institutionalised racism.