Q:Build a movie plot around this: Who is following Carlo and Anna? detectives
A:
Franco Arno (Karl Malden) a middle-aged blind man is walking down a street at night with his niece Lori (Cinzia De Carolis) when they pass by a man in a car. Franco overhears him mention blackmail. Franco bends over, feigning tying his shoes and asks Lori to describe the man in the parked car. Lori does, but says that she cannot see the other man clearly. They walk back to Franco's apartment nearby and while Lori sleeps, Franco works on a puzzle when he hears a noise. Outside, the unseen man in the parked car gets out and knocks out a night watchman by the gate of a large medical complex that stands right next to the apartment building where Franco lives. The unseen man uses a screwdriver to get inside the building, goes to Dr. Calabresi's office, unlocks it and gets inside. A doctor preparing to leave for the night sees the nightwatchman unconsicious and sees a dark figure running away.The next day, the police arrive at the Terzi Institute investigating the break-in. Carlo Giordani (James Franciscus) arrives and bumps into Franco outside the institute and helps the blind man up. Carlo introduces himself and says that he's a reporter investigating the break-in. Inside, Carlo learns that nothing was stolen from the institute. Professor Terzi (Tino Carraro) tells the officers that since nothing is missing, he would rather not reveal the institutes research. Dr. Casoni (Aldo Reggiani) suggests that pictures may have been taken, but Dr. Braun (Horst Frank) says to let the cops handle the matter. Meanwhile, Dr. Calabresi (Carlo Alighiero), (the same man from the car who Franco overheard) looks at his files in his office and phones someone and agrees to meet with him. Calabresi tells his fiancee Bianca Merusi (Rada Rassimov) that he knows who broke into the institute and what was taken, but he does not wish to tell anyone yet, saying it could mean a "big step forward". At a local train station, while a group of reporters are waiting for an celebrity starlet to arrive from an arriving train, the unseen man...