Saoirse Ronan, Sam Rockwell and David Oyelowo have all joined the cast for a currently untitled murder mystery feature for Searchlight Pictures.

The film will be set in 1950s London, where a desperate Hollywood film producer sets out to turn a popular West End play into a film. When members of the production are murdered, world-weary Inspector Stoppard (Rockwell) and overzealous rookie Constable Stalker (Ronan) find themselves in the midst of a puzzling whodunit within London’s glamorous Theatreland and sordid underground.

‘This Country’ filmmaker Tom George is set to direct from a script penned by Mark Chappell.

A production start date has yet to be set. Katie Goodson-Thomas, Head of Development & Production for Searchlight Pictures UK, will oversee for the studio along with Director of Production Richard Ruiz and Senior Development Executive Pete Spencer.

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Ronan can be seen next in Wes Anderson’s ‘The French Dispatch’ while Rockwell was recently seen in Clint Eastwood’s ‘Richard Jewell’ and recently voiced the title character in Disney’s ‘The One and Only Ivan’.

Oyelowo was most recently seen in the drama ‘Come Away’ opposite Angelina Jolie. He will next be seen in ‘Midnight Sky’ in which he stars opposite George Clooney.