Release Info
Release Dates
| USA | 25 February 1954 | (premiere) (Salt Lake City, Utah) |
| USA | 6 March 1954 | |
| Japan | 17 August 1954 | |
| Sweden | 27 September 1954 | |
| France | 13 October 1954 | |
| West Germany | 24 November 1954 | |
| Belgium | 26 November 1954 | |
| Portugal | 16 December 1954 | |
| Finland | 17 December 1954 | |
| France | 4 February 1955 | (Paris) |
| Denmark | 18 April 1955 | |
| Austria | March 1956 |
Also Known As (AKA)
| Blut im Schnee | Austria, West Germany |
| Gevaarlijke opdracht | Belgium (Flemish title), Netherlands (imdb display title) |
| Mission périlleuse | Belgium (French title), France |
| Agente federale X3 | Italy |
| Det forsvundne vidne | Denmark |
| Epikindyni apostoli | Greece (transliterated ISO-LATIN-1 title) |
| Kohtalokas komennus | Finland |
| Missão Perigosa | Brazil (imdb display title) |
| Neves Traidoras | Portugal (imdb display title) |
| Nieves traidoras | Spain |
| På farligt uppdrag | Sweden |
| Rangers of the North | USA (alternative title) |
| Tenho Sangue em Minhas Mãos | Brazil (imdb display title) |
