After discovering that the lighthouse his family tends is a portal to strange and dangerous worlds, eleven-year-old Griffin must travel through it to save his father from a threat to all humanity.
- ISBN10 1534405143
- ISBN13 9781534405141
- Publish Date 23 October 2018
- Publish Status Out of Stock
- Publisher Simon & Schuster
- Imprint Atheneum Books for Young Readers
- Format Hardcover
- Pages 256
- Language English