The September 5 cast features Peter Sarsgaard as Roone Arledge, John Magaro as Geoffrey Mason and Ben Chaplin as Marvin Bader. This info article contains minor spoilers and character details for Tim Fehlbaum‘s 2024 movie on MGM+ and Paramount+. Check out more cast guides in Vague Visages’ Know the Cast category.

September 5 takes place in Munich, Germany. During the 1972 Summer Olympics, the ABC Sports crew learns about a terrorist attack. The narrative follows the main protagonists as they discuss the most appropriate way to present their coverage. Here’s every actor and character in September 5.

Read More at VV — Know the Cast: ‘The Conversation’

September 5 Cast: Peter Sarsgaard as Roone Arledge

Character Profile: The president of ABC Sports. He wants to tell the stories of victims involved in a terrorist attack. Roone worries little about ratings and tries to stay focused on the core aspects of his job.

Sarsgaard’s Resume: Mark in Garden State (2014), Clyde Martin in Kinsey (2014), Alan Troy in Jarhead (2005), Bobby Kennedy in Jackie (2016), Tommy Molto in Presumed Innocent (2024)

Read More at VV — Know the Cast: ‘Interstellar’

September 5 Cast: John Magaro as Geoffrey Mason

Character Profile: The control room head for ABC Sports. He directs the coverage of a terrorist attack. Geoffrey clashes with a colleague after mistakenly believing that all hostages were released.

Magaro’s Resume: Charlie Geller in The Big Short (2015), Dannie McElroy in Carol (2015), Tibbet in Overlord (2018), Silvio Dante in The Many Saints of Newark (2021), Owen in The Agency (2024-)

Read More at VV — Know the Cast: ‘Smile 2’

September 5 Cast: Ben Chaplin as Marvin Bader

Character Profile: The head of operations for ABC Sports. He questions Roone’s motivations and Geoffrey’s decision-making process. Marvin worries about damaging his network’s reputation.

Chaplin’s Resume: Brian in The Truth About Cats & Dogs (1996), Pvt. Bell in The Thin Red Line (1998), John in Birthday Girl (2001), Sam Kennedy in Murder by Numbers (2002), Frank Mundi in The Nevers (2021-23)

Read More at VV — Know the Cast: ‘Apartment 7A’

September 5 Cast: Leonie Benesch as Marianne Gebhardt

Character Profile: A German translator for ABC Sports who speaks Hebrew. She listens to a police scanner for leads. Marianne works closely with Geoffrey in the ABC Sports control room.

Benesch’s Resume: Eva in The White Ribbon (2009), Greta Overbeck in Babylon Berlin (2017-20), Princess Cecilie in The Crown (2017-19), Carla Nowak in The Teachers’ Lounge (2023), Eva Rolin in Moresnet (2024)

Read More at VV — Know the Cast: ‘Past Lives’

The September 5 cast also includes:

• Zinedine Soualem as Jacques Lesgards
• Georgina Rich as Gladys Deist
• Corey Johnson as Hank Hanson
• Marcus Rutherford as Carter Jeffrey
• Daniel Adeosun as Gary Slaughter
• Benjamin Walker as Peter Jennings
• Ferdinand Dörfler as Hermann Jäger
• Solomon Mousley as Roone’s Assistant
• Caroline Ebner as Assistant Editor Judy
• Daniel Betts as Director Swim Race

Q.V. Hough (@QVHough) is Vague Visages’ founding editor.