Gatsby keeps vigil outside the Buchanans' house

After the accident, Gatsby stands watch outside the Buchanans' house in the darkness, hiding in the shrubbery to ensure Tom doesn't hurt Daisy. Nick approaches and Gatsby explains he's waiting to see if Tom causes any trouble, though Daisy has locked herself in her room. Nick peers through the kitchen window and sees Tom and Daisy sitting together over fried chicken and ale, talking intently with their heads close together. Nick leaves Gatsby still keeping his vigil, waiting for a sign from Daisy that never comes.

The image of Tom and Daisy in domestic intimacy reveals that they have already closed ranks, united by their class and their capacity for self-preservation. Gatsby's lonely vigil outside demonstrates his complete misunderstanding of Daisy's character and priorities—she is inside conspiring with Tom, not needing rescue. This moment crystallizes Gatsby's isolation and the futility of his dream, as he guards a woman who has already abandoned him.