Oľga Zöllnerová, a captivating presence in mid-20th century Slovak cinema, holds a special place in the hearts of collectors for her unique contributions to the genre. While her filmography might be relatively compact, her performances often left an indelible mark, particularly within the realm of genre filmmaking that physical media enthusiasts cherish. Her most sought-after work among WatchRoster members is undoubtedly the chilling 1968 horror film, *Volanie démonov*. This rarely seen gem, a cornerstone of Czechoslovak horror, showcases Zöllnerová's distinctive talent in a role that has resonated through decades. Its scarcity on legitimate home video releases—often relegated to obscure, fan-restored transfers—only elevates its mythical status and the fervent desire of collectors to unearth the best possible presentation. Securing any physical rendition of *Volanie démonov* with Zöllnerová’s unforgettable performance is a badge of honor for any serious genre collector.