Over 1 Million Sold in Series! Crisis in the Civil War. This softcover 3-pack of books 22–24 includes Freedom at the Falls , Terror in the Tunnel , and Rescue on the River . In 1861, the states are divided North and South, and the country is at its most vulnerable. The Imagination Station takes cousins Patrick and Beth to the heart of the Civil War. Can they help Abraham Lincoln hold the nation together while foiling plots against him? Can they rescue friends on the Underground Railroad? To succeed, they’ll have to face hatred and hostility on the rails, down the river, and in the capital. When kids step into the Imagination Station, they experience an unforgettable journey filled with action-packed adventure to inspire their imaginations. With each book, they’re whisked away with cousins Patrick and Beth to embark on a new journey around the world and back in time.