For a three-act plot analysis, put on your screenwriter’s hat. Moviemakers know the formula well: at the end of Act One, the main character is drawn in completely to a conflict. During Act Two, she is farthest away from her goals. At the end of Act Three, the story is resolved.
Act I
Act I starts at the very beginning (a very good place to start) and ends when Lucy witnesses the murder – it changes her perspective on life, the universe, and everything, permanently.
Act II
Lucy’s rejection of George in Chapter Sixteen (“Lying to George”) marks the end of Act II – we’re not sure if she can repair the horrific muddle she’s made of her relationships, and if she will ever come to terms with her true feelings for the young Mr. Emerson.
Act III
At the last minute (Chapter Nineteen), old Mr. Emerson makes Lucy realize just how confused and untrue to herself she’s been. Things between the young lovers are resolved just in the nick of time.