According to The Hollywood Reporter, Catherine Keener has come aboard the cast of Fox 2000's Percy Jackson and the Lightning Thief.
The film is being adapted by Christopher Columbus' from Rick Riordan's fantasy-adventure book series. Columbus wrote the screenplay with Craig Titley.
In the film, Poseidon's son, a 12 year old boy, sets out on a quest in present-day America to rescue his mother, return Zeus' stolen lightning bolt and prevent a civil war from erupting among the gods.
Keener will play the role of Percy's mother. She has gone to great lengths to "protect her son from otherworldly forces but has been abducted by Hades."
Other members of the cast include Pierce Brosnan, Uma Thurman, Sean Bean, Kevin McKidd and Melina Kanakaredes. Logan Lerman plays Percy.