Spectacular scenery and spine-chilling suspense are the principal ingredients of a picture which indicates that there is a great deal to be said for producer-director Irving Allen's technique of combining Hollywood's resources with those of nature herself. The exteriors, photographed in Switzerland by Richard Angst and Tony Braun, are so deftly combined with interiors and closeups filmed at Monogram's Hollywood studio as to lend the whole picture an air of verisimilitude which otherwise might never have been achieved. The breath-taking Alpine scenery, the suspenseful struggle of small figures pitted against the might of the mountain are the picture's greatest asset. It has an out-of-the-ordinary freshness which should be reflected in better-than-ordinary grosses. Anna Lee, Gilbert Roland and Warren Douglas are the three components of the eternal triangle depicted in Max Trell's screenplay, based on a book by James Ramsay Ullman. All are experienced mountain-climbers: both of the men are in love with Miss Lee, and an ascent of the Matterhorn provides a testing ground for the emotions of all three. Roland, cast as an Alpine guide, sees an opportunity to rid himself of his rival forever, and leaves the unconscious Douglas to get down as best he may. Miss Lee, who by this time has made up her mind which of the men she really loves, persuades the guide to go back up the mountain to rescue his enemy. He dies in the attempt. Lud Gluskin is credited as musical director, and his work contributes notably to the over-all production values of the picture.