The only way this could really be pulled off, in an intelligent way true to Mr J, would be if there's a fakeout ending/switch and the protagonist wasn't really the Joker:
A) the Joker was an incidental side/support character in the school who pulled the protagonist's strings off screen
B) the whole thing is wrapped in an unreliable narrative, Usual Suspects style
If they play it totally straight this'll be a really hard sell.
A) the Joker was an incidental side/support character in the school who pulled the protagonist's strings off screen
B) the whole thing is wrapped in an unreliable narrative, Usual Suspects style
If they play it totally straight this'll be a really hard sell.