Movies
According to The Hollywood Reporter, Boyce will adapt his own novel for the film, which follows a boy who is mistaken for an adult after a growth spurt.
The boy later poses as his friend's father in order to board a spaceship voyage. The journey becomes dangerous and he is forced to help save the crew.
Walden's previous films include the Chronicles of Narnia series, Bridge to Terabithia and Tooth Fairy.
More: Frank Cottrell Boyce, Movies
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