More spoilers!
Percy Jackson and the Olympians - percy refuses immortality after being offered it
The Giver - jonas escapes with the baby
1984 - winston is finally broken by the government and accepts the system
Animal Farm - the pigs become the humans they broke away from
And Then There Were None - the judge fakes his death, turns out the be the real murderer doing it just for kicks, and commits Self Delete
Fahrenheit 451 - montag escapes to go live with hobos who memorize books, the city gets nuked and his wife dies
To Kill a Mockingbird - they lose the trial and the black guy dies in jail, the mysterious neighbor saves scout from an angry redneck