Inferno, Part One

S07E19·9.0·May 9, 1970·25m·BBC One

A dangerous experiment throws the Doctor into a doomed dimension

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#2In Season 7of 25 rated episodes

#162All-timeof 700 rated episodes

+0.2vs season avgSeason 7 averages 8.8

1970First airedMay 9, 1970

Guest stars

Christopher Benjaminas Sir Keith Gold

Derek Wareas Private Wyatt

Pat Gormanas Primord

Dave Carteras Primord

Sheila Dunnas Dr. Petra Williams

Sheila Dunnas Petra Williams

Olaf Pooleyas Director Stahlman

Olaf Pooleyas Professor Stahlman

Derek Newarkas Greg Sutton

David Simeonas Private Latimer

Walter Henryas Primord

Peter Thompsonas Primord

Philip Ryanas Primord

Keith Jamesas Patterson

Douglas CamfieldDirector

Don HoughtonWriter