The plot of the new book explores one man's journey as he comes to discover the true meaning of Christmas while playing Santa in the Radio City Christmas Spectacular. The 208-page book will be released Oct. 14 from Random House.

It tells the story of actor-turned-author Hall, who according to publishers, "wasn't always such a jolly old soul. Believe it or not, this Santa was once a Scrooge. For the first time, Charles tells the inspiring story of his own transformation, from a wide-eyed child who once caught a glimpse of Santa through a frosty windowpane, to a young man who lost his faith in jolly old Saint Nick. It wasn't until fate intervened, in the form of an unexpected role, a stage malfunction, and hundreds of letters from children, that Charles rediscovered his Christmas spirit. Ultimately, he realized Radio City was his life’s work, and that Santa isn’t just a role."

The film musical is being developed by New Regency and Walden Media. Larry Stuckey ("Little Fockers") will write the script. A songwriter or songwriting team has not been announced. Stephen Chbosky ("The Perks Of Being A Wallflower") will direct.