At the heart of every sequel is the narrating character’s reaction to the preceding scene’s disaster. This is where the author gets the opportunity to dig around inside his character’s emotional and mental processes and find out what he’s really made of. The scene is about external action; the sequel is about internal reaction. The sequel will sometimes be entirely confined to the POV character’s mind; other times, it will be dramatized through action or dialogue.
Via mooderino, Sarah McElrath