Engström was originally written as a Norwegian. His nationality was changed to Swedish to reflect Stellan Skarsgård's country of origin.
Christopher Nolan directed a remake of this film under the same title in 2002.
This movie was made available in 2023 when it was released on inter-regional (region-free) Blu-Ray Disk by Norske Filmklassikere (Norwegian Film Classics), Norsk Filmdistribusjon, and Platekompaniet as the 10th release in a new series with classics, NFK0010, with subtitles in English, and is supposed to be held in stock for film lovers.