~•~•~• The Senior Year series : Who Killed the Principal? The Principal of Willow Heights Academy is found dead in his office on a rainy Sunday night. Detective Okoye, who is in charge of the case, is thrown into a maze as he tries to unravel the mystery behind the murder. But when evidence points at the possibility of a student being the killer, Okoye begins to wonder who among the rich, snobbish senior students of Willow Heights would kill the principal.