Bored of waiting for his father to come home from building the last leg of the transcontinental railroad, Will impulsively boards a train to look for him. Within hours, he has found his father and encountered an avalanche, a Sasquatch, and a thief! Three years later, Will is proud to join his father on the maiden voyage of The Boundless (Simon & Schuster, $16.99), the longest train in the world, as it travels across the country—and unprepared for the adventure that awaits him on the journey. Some of the characters from his past are among the 6,495 passengers aboard the Boundless, and Will and a traveling circus are the only things standing between his father and a ruthless murderer. Kenneth Oppel, author of the beloved Airborn fantasy series, brings us an invigorating 19th-century coast-to-coast adventure aboard the elegant and powerful Boundless. Ages 9-12. Emily Ellerbe