Endgame by Malorie Blackman

In the climactic finale of a long-running dystopian saga, a high-profile killing triggers a gripping whodunnit told across multiple timelines and perspectives. As political ambition, criminal entanglements, and tangled family loyalties collide, old wounds reopen and buried secrets surface, forcing those involved to confront the corrosive legacy of prejudice and power. The investigation builds to a twist-filled reckoning that ties together years of love, loss, and betrayal to reveal the truth behind the crime.