Novel ending solutions / hints

The following novel endings were solved / remain unsolved:

1: Sinclair Lewis, Arrowsmith

2: Walker Percy, Lancelot

3: James M. Cain, The Postman Always Rings Twice

4: E. M. Forster, A Room with a View

5: Charles Dickens, David Copperfield

6: Walker Percy, The Second Coming

7: Iris Murdoch, A Word Child

8: Barbara Guest, Seeking Air

9: Ernest Hemingway, The Sun Also Rises

10: Fyodor Dostoevsky, Crime and Punishment

11: Raymond Chandler, The Big Sleep

12: Jane Austen: Sense and Sensibility

13: William Makepeace Thackeray: Vanity Fair

14: D.H. Lawrence: Women in Love

15: Johann Wolfgang von Goethe: The Sorrows of Young Werther

16: Leo Tolstoy: Anna Karenina

17: F. Scott Fitzgerald: The Beautiful and Damned

18: Samuel Richardson: Pamela, or Virtue Rewarded

19: Djuna Barnes: Nightwood

20: Thomas Hardy: Tess of the D’Urbervilles

21: Oliver Goldsmith: The Vicar of Wakefield

22: Daniel Defoe: The Fortunes and Misfortunes of the Famous Moll Flanders

23: Vladimir Nabokov: Laughter in the Dark

24: Alessandro Manzoni, The Betrothed