Arrow to the Heart is the 24th chapter of Eldest. It takes the point of view of Eragon.
Summary[]
Eragon is traveling up Eldor Lake and the Gaena River with Orik, Saphira, and the elves Narí, Lifaen, and Arya. In this chapter Eragon learns about the story of "mad old" King Palancar and the Crisis from Lifaen. Eragon spots a gyrfalcon with a broken wing and Arya kills it with an arrow because it was too injured to heal.