Inferno, Part One

Jon Pertwee The Third Doctor Caroline John Elizabeth "Liz" Shaw Nicholas Courtney Alistair Gordon Lethbridge-Stewart John Levene Sergeant Benton Christopher Benjamin Sir Keith Gold Olaf Pooley Director Stahlman Olaf Pooley Professor Stahlman David Simeon Private Latimer Derek Ware Private Wyatt Roy Scammell RSF Sentry WR Walter Randall Harry Slocum Derek Newark Greg Sutton Pat Gorman Primord Dave Carter Primord KJ Keith James Patterson SD Sheila Dunn Petra Williams SD Sheila Dunn Dr. Petra Williams PR Philip Ryan Primord Peter Thompson Primord Walter Henry Primord IF Ian Fairbairn Bromley