6 books in series
George's Secret Key
George's Secret Key is a 6-book series with 6 released primary works first released in 2007 with contributions by Lucy Hawking and Stephen Hawking.
| #1 |  George's Secret Key to the Universe
| 3.41 | 15 reads | ||
| #1 |  George's Secret Key to the Universe
| 4 | 2 reads | ||
| #2 |  George's Cosmic Treasure Hunt
| 4.5 | 2 reads | ||
| #3 |  George and the Big Bang
| 4 | 2 reads | ||
| #4 |  George and the Unbreakable Code
| 4 | 2 reads | ||
| #5 |  George and the Blue Moon
| 4 | 1 read | ||
| #6 |  George and the Ship of Time
| 3 | 2 reads |