Wikimedia Commons/The Audacity AMC Celebrity Billy Magnussen reveals the real Silicon Valley fight club behind AMC's The Audacity's shocking episode 4 scene. May 5, 2026 AceShowbiz - Billy Magnussen, who stars as tech CEO Duncan Park in AMC's The Audacity, recently opened up about the gripping and unconventional fight club sequence featured in the show's fourth episode, "Vanitas." This scene serves as a pivotal moment in the first season, highlighting the darker, more raw side of Silicon Valley culture.