A Cold Night's Death (also known as The Chill Factor) is a 1973 American made for television horror-thriller film.
The film was directed by Jerrold Freedman and starred Robert Culp, Eli Wallach, and Michael C. Gwynne.
After the mysterious deaths of their colleagues, scientists Robert Jones (Robert Culp) and Frank Enari (Eli Wallach) are sent to an isolated research station deep in the Arctic Circle to continue their observation of monkey behavioral patterns.
As the two men quarrel over who has to clean the station and other responsibilities, they slowly realize that the deaths of their co-workers may have something to do with a mysterious and dangerous presence, one that the monkeys increasingly fear.
[1] Dave Sindelar from Fantastic Movie Musings and Ramblings also praised the film's atmosphere and performances, calling it "one very effective TV-movie thriller".