Timid and reserved, though mildly psychotic, Ursula and her lusty sister Dagmar, along with Dagmar’s drug dealing friend Filippo, have arrived at a seaside hotel to locate their estranged mother. But they soon become embroiled in a web of terror, as a black-clad mystery assailant begins murdering other guests with a most unusual weapon. One of the earliest sex-gialli (and featuring one of the most memorable weapons in the history of the genre), THE SISTER OF URSULA packs in copious amounts of softcore sex between killings and co-stars Barbara Magnolfi (SUSPIRIA), Stefania D'Amario (ZOMBIE), and Marc Porel (THE PSYCHIC). This notorious fan favorite has been newly restored in 4K.