Some of the film's sets were reused from Highlander: Endgame.
Prison of the Dead's instrumental score is recycled. The music used is actually from (and originally recorded for) the film Netherworld, another Full Moon feature.
Dave Parker was originally set to direct and write the film but later dropped out as he was only given one month to write the script and prep the film.
This was Full Moon's last movie to be shot at Castel Films in Romania.
In the script, the lead executioner Reaper was referred to as "Raper."