In Whirligig, where is Brent heading? Where is he coming from?

Brent had been driving drunk when he caused the car accident that killed Lea Zamora. As a way to atone for his crime, Brent is asked by Mrs. Zamora to build four versions of Lea’s favorite wooden toy, a whirligig. These devices have arms that whirl when the wind blows. She asks him to build them in tribute to Lea and to install them in the four corners of the country: Washington, California, Florida, and Maine. She provides a Greyhound bus ticket good for forty-five days and a camera to take photos of each whirligig. Brent takes on the challenge. We follow his path on the bus in alternating chapters: from his home in Chicago to Seattle, Washington, in “The Afterlife”; to San Diego, California, in “Twinkle, Twinkle, Little Star”; to Tampa, Florida, in “Apprentices”; and to Weeksboro, Maine, in “Everybody Swing!” When the challenge is complete, he still has some travel time left. We readers are left to wonder exactly where Brent will go next.