Dark 1977 Italian Giallo horror directed by Antonio Bido. Mara (Paola Tedesco) is on her way home when she decides that she needs to buy some painkillers. What she does not realise, when she enters the pharmacy, is that the person behind the counter is a murderer and the pharmacist is dead. Things take an even darker turn when Mara finds herself being stalked by the killer, who is determined to eliminate the only witness to his crime. Mara and her boyfriend Lukas (Corrado Pani) find themselves sinking deeper into a mystery which is much more than an ordinary murder.