La Morte Vivante

La Mort Vivante also released as The Living Dead Girl is a 1982 French horror film directed by Jean Rollin and starring Marina Pierro, Francoise Blanchard, Mike Marshall, Carina Barone, Fanny Magier, Patricia BesnardRousseau and Sam Selsky. The story involves a young woman who has returned from the dead and needs human blood in order to survive.

The agent later returns to the Valmont Mansion, along with her boyfriend. Catherine interrupts their sex, killing both and drinking their blood. Hlne arrives and is shocked to discover the dead bodies. When she finds Catherine, naked and playing the piano, she assumes that Catherine didnt really die but was actually hidden for the past two years. Hlne washes the blood off Catherine, puts her to bed, and drags the bodies down to the crypt, where she discovers the bodies of the grave robbers. Catherine creeps down and begins to drink the blood from one of the bodies, but Hlne stops her. Hlne cuts her arm and lets Catherine drink her blood, until she can think of a way to supply her friend with blood.Barbara goes around the village asking about the woman in her photograph, but the answer is always the same It is Catherine Valmont, and she died two years ago. Greg thinks Barbara is making too much of it, and discourages her from investigating further. Meanwhile, Hlne tries to understand what is happening to Catherine, trying to teach her to speak again. Deciding to bring her victims, Hlne pretends to be out of fuel and flags down a helpful motorist, drawing her back to the mansion. Hlne offers the woman a drink and locks her in. The woman soon begins to panic, but Hlne throws her in the crypt, where Catherine grabs her and rips her stomach out. Soon after, Barbara shows up at the Valmont mansion, seeking Catherine. Unsettled by Catherines behavior, she attempts to phone Greg, but Hlne confronts her. They argue, and Hlne tries to take Barbaras camera. Barbara flees. ........

Source: Wikipedia