Of Darkness... is a debut studio album released on February 1991 by the Swedish heavy metal band Therion and it contains songs written in the early years of the band, during the 1980s. The album is indicated by the band itself as an end of its first era. The album was re-released on November 27, 2000 under Nuclear Blast label as a part of The Early Chapters of Revelation box-set. It contains remastered songs, as well as four bonus tracks.