While not officially a "rumored" series, it's easy to see why you might mistake it for one. It shares a lot of the elements that made *Percy Jackson & the Olympians* so popular, like:
* Demigod protagonists: Carter and Sadie, like Percy, are not ordinary teenagers. They are half-human and half-god, destined to face a dangerous world.
* Mythological creatures: The *Kane Chronicles* is brimming with Egyptian gods, goddesses, monsters, and magical creatures.
* Fast-paced action and humor: Riordan's signature writing style brings to life exciting battles and witty dialogue.
The *Kane Chronicles* was released between 2010 and 2011, making it a confirmed and beloved series in Riordan's pantheon of mythology-based works.
There are also a few other books set in the same world:
* The Red Pyramid (2010)
* The Throne of Fire (2011)
* The Serpent's Shadow (2012)
* The Staff of Serapis (2019)
If you're interested in the *Kane Chronicles*, I highly recommend checking it out! You'll find it's an exciting and entertaining series, full of adventure and fascinating mythology.