Sally Carmichael will be filmed in Utah this summer. Gollum will play a writer who feels ashamed of secretly writing a series of popular young people's love stories, documenting the epic love story between a human girl and a mermaid - all written under the pen name Sally Carmichael. When he was forced to meet with a top box office star to discuss a movie adapted from a book by Sally Carmichael, the author's carefully constructed anonymous life began to crumble around him.