The Heirs by Faridah Abike-iyimide

These are the five heirs of the illustrious billionaire Leontes Button. Adopted and viciously trained with their father's infamous "Button Method" to prove his hypothesis for creating prodigies--child geniuses--the Button siblings have had no choice but to be brilliant according to their father's impossibly high standards.

Until he is murdered at his annual Prodigy Ball.

Now, all who attended the ball are required to stay in the Button Manor while the police investigate. But the officers have their work cut out for them--each of the Button siblings has something to hide, but The Heirs aren't the only ones with secrets. After all, Leontes Button was especially good at making enemies. . .