- Clint Eastwooddirector (directed by)
- Hal Dresnerscreenplay by &
- Warren Murphyscreenplay by (as Warren B. Murphy) &
- Rod Whitakerscreenplay by
- Rod Whitakerbased on the novel by (as Trevanian)
- Heidi Brühl(as Heidi Bruhl)
- Reiner Schöne(as Reiner Schoene)
- Susan Morgan Cooper(as Susan Morgan)
- David Brownexecutive producer
- Robert Daleyproducer (produced by)
- Richard D. Zanuckexecutive producer
- Frank Stanleydirector of photography
- William N. Clarkcinematographer (uncredited)
- Ferris Websterfilm editor
- Janis Clarkhairstylist: United States (as Janice Clark)
- Joe McKinneymakeup artist
- Agnese Panarottohairstylist: Switzerland
- Mario Pisaniunit manager: Switzerland
- Fred R. Simpsonunit production manager: United States (as Fred Simpson)
- Wallace Worsley Jr.unit production manager: Switzerland (as Wallace Worsley)
- Charles Clementpost production operations head (uncredited)
- James Fargofirst assistant director (as Jim Fargo)
- Craig Hustonsecond assistant director: United States
- Victor Tourjanskysecond assistant director: Switzerland
- Larry Clark Birdproperty master: United States (as Larry Bird)
- Joe Chevalierproperty master: Switzerland
- Aurelio Crugnolaart director: Switzerland
- John M. Dwyerset decorations-United States (as John Dwyer)
- George C. Webbart director: United States (as George Webb)
- Robert L. Hoytsound rerecording (as Robert Hoyt)
- Roger Heman Jr.re-recording mixer (uncredited)
- Earl Maderyre-recording mixer (uncredited)
- Dennis C. Salcedooptical sound recordist (uncredited)
- Roger Swordsound editor (uncredited)
- Ben McMahanspecial effects (as Ben Mc Mahan)
- Bill Couchstunts (uncredited)
- Orwin C. Harveystunts (uncredited)
- Carey Loftinstunts (uncredited)
- George Orrisonstunt double: Clint Eastwood (uncredited) / stunts (uncredited)
- Buddy Van Hornstunts (uncredited)
- Buddy Bowlesgaffer (as Bud Bowles)
- Bruce Catlincamera assistant
- Don Christiestillman: United States
- William N. Clarkcamera operator (as Bill Clark)
- John Clearephotographer: mountain sequences
- Mike Hooverphotographer: mountain sequences
- Bud Howellkey grip
- Peter Pilafianphotographer: mountain sequences
- Jim Porterbest boy
- Frank Balchuswardrobe man: Switzerland
- Sheila Masonwardrobe woman: United States
- Bona Nasalli-Roccawardrobe woman: Switzerland
- Nefte Riccòseamstress (as Nefte Ricco)
- Charles Waldowardrobe designer
- Glenn Wrightcostume supervisor
- Richard C. Meyerassistant editor: United States (as Richard Meyer)
- Roberto Silviassistant editor: Switzerland
- Robert Bainmusician: guitar (uncredited)
- Arnold Belnickmusician: violin (uncredited)
- Bob Bornsteinmusic copyist (uncredited)
- Dennis Budimirmusician: guitar (uncredited)
- Thomas R. Buffummusician: violin (uncredited)
- Larry Bunkermusician: percussion (uncredited)
- Alf Clausenmusic copyist (uncredited)
- Ronald Coopermusician: cello (uncredited)
- Irwin Costnermusic copyist (uncredited)
- Don Cristliebmusician: bassoon (uncredited)
- Art Rimdziustransportation captain: United States
- Martin Boysenclimber: from the Dougal Haston International School of Mountaineering in Leysin, Switzerland
- Laura Fattoriproduction secretary: Switzerland
- Dougal Hastonclimber: from the Dougal Haston International School of Mountaineering in Leysin, Switzerland
- David Knowlesclimber: from the Dougal Haston International School of Mountaineering in Leysin, Switzerland
- Jack Kosslyndialog coach
- Hamish MacInnesclimber: from Scotland (as Hamish McInnes)
- Guy Neithardtclimber: from the Dougal Haston International School of Mountaineering in Leysin, Switzerland
- Carol Rydallsecretary: The Malpaso Company
- Charles Scottclimber: from the Dougal Haston International School of Mountaineering in Leysin, Switzerland
- Norman Dyhrenfurthour grateful appreciation to the climber: leader of expedition
- Mike Hooverour grateful appreciation to the climber: climbing advisor
Crew verified as complete
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