* Film rights are complex: While Disney owns the rights to most of Riordan's works, including *Percy Jackson & the Olympians*, the situation with the *Heroes of Olympus* series is more complicated. It's not publicly known who currently holds the film rights for these books.
* Success of the Percy Jackson series: The recent success of the *Percy Jackson & the Olympians* Disney+ series might increase interest in adapting *The Lost Hero*. However, it's also possible that the success of the show may lead to a focus on adapting more books from that series first.
* Riordan's involvement: Rick Riordan has been vocal about his desire to have more control over adaptations of his books. This could impact whether or not *The Lost Hero* gets adapted, and how it would be done.
In conclusion: While there's a chance *The Lost Hero* could be adapted into a movie, it's far from a certainty. Many factors will influence the decision, including film rights, success of other adaptations, and Riordan's own involvement. It's best to stay tuned and see what the future holds.