Engström was originally written as a Norwegian. His nationality was changed to Swedish to reflect Stellan Skarsgård's country of origin.
This movie was remade in 2002 by Christopher Nolan with the same title
This film is part of the Criterion Collection, spine #47.
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.