This was among a batch of "banned movies" I got my hands on in early '91 when I was 17- and needless to say it blew me away
So my first watch was the cut, banned German version, a few years later followed by a basically uncut (apart from some print damage) Greek ex rental vhs, then came the Roan Group laserdisc, with the ABUK and Raptor DVDs bringing "Tenebrae" to the 21st century. So far, the Scandinavian DVD is the only fully complete edition I own. Looking very much forward to the upcoming Arrow SE of my favourite giallo.
