About this episode

This episode features an enhanced audio version of FRONTLINE’s 2019 documentary on the Mueller Investigation.

Robert Mueller, the 9/11 era FBI director — who was later appointed as special counsel to investigate Russian interference in the 2016 election — died on March 20, 2026, at age 81. From our archives, here’s the enhanced audio version of FRONTLINE’s 2019 documentary, "The Mueller Investigation."

Topics covered

• Mueller Investigation
• Russian interference
• 2016 election
• FBI
• documentary

Keywords

• Mueller
• FBI
• Russian interference
• 2016 election
• documentary

Mentioned in this episode

Organizations: FBI

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