Gil Kenan is directing the film in Belfast, Northern Ireland. The story pits two teenagers in a dramatic race to save their fellow inhabitants before the city's lights go out forever.
Robbins will play the mysterious inventor Lorris Harrow, who harbors a secret about the city, while Landau has been cast as Harrow's son's employer, Sul, a shadowy character who presides over the Pipeworks.
Marianne Jean-Baptiste and newcomer Harry Treadaway have also joined the cast. Twentieth Century Fox will release City of Ember on Oct 10, 2008, and Fox Walden will handle the marketing campaign.
Playtone's Gary Goetzman and Tom Hanks are producing and John D Schofield serves as executive producer. Summit Entertainment is handling international sales.
Walden Media head of production Alex Schwartz and creative executive Bonnie Solomon are overseeing the project for the company.
Executive vice president of business and legal affairs Jim Meenaghan negotiated the latest talent deals on behalf of Walden Media.
Robbins is represented by CAA, Landau by TalentWorks, Jean-Baptiste by Untitled Entertainment, and Treadaway is handled by PFD.