- Sam Rockwell Inspector Stoppard
- Adrien Brody Leo Köpernick
- Saoirse Ronan Oficial Stalker
- Ruth Wilson Petula Spencer
- Harris Dickinson Richard Attenborough
- Shirley Henderson Agatha Christie
- Tim Key Harrold Scott
- David Oyelowo Mervyn Cocker-Norris
- Reece Shearsmith John Woolf
- Charlie Cooper Dennis
- Lucian Msamati Max Mallowan
- Pippa Bennett-Warner Ann Saville
- Pearl Chanda Sheila Sim
- Paul Chahidi Fellowes
- Sian Clifford Edana Romney
- Jacob Fortune-Lloyd Gio
- Ania Marson Mignon Saunders