Black Chalk by Christopher J. Yates
One game. Six students. Five survivors.
It was only ever meant to be a game.
A game of consequences, of silly forfeits, childish dares. A game to be played by six best friends in their first year at Oxford University. But then the game changed: the stakes grew higher and the dares more personal, more humiliating, finally evolving into a vicious struggle with unpredictable and tragic results.
Now, fourteen years later, the remaining players must meet again for the final round.