Cathedral Idea, developed from feedback

Bells ring and the Canterbury Cathedral on the sunset fades in. We notice David standing on its rooftop, watching the colour changes on the horizon. He is truly happy. From the inside pocket of his jacket he takes out a small box and opens it, there is a wedding ring inside. He closes it and gestures, rehearsing to make a proposal. Filled with courage, he walks to the other edge of the roof and stands there leaning on a barrier, looking at the darkening sky and the quiet town. Suddenly, he hears approaching sounds of running feet and cries. A man runs out of the passage on the memorial court, David notices that he is injured in the right shoulder. A gunshot in the passage breaks the silence, there is a flash and the person falls on the stone floor, a pool of blood forms around him. David is shocked, but he keeps on watching. Another man comes out of the same passage, lowering a gun in his hand, and stands over the body.

 Single strikes of bell ring from the bell tower next to David, the killer looks up and notices his silhouette. David takes cover, but it's too late. After a while he looks over the barrier to see the murderer walking inside the cathedral gates. David rushes to the exit, but it can only be opened from inside. He tries the floor hatch, it's locked. His only hope is to climb down the cathedral's wall and hide inside one of the bell towers. David takes off his jacket and fights the fear of height, when he hears footsteps running up towards the stair door.

David is a young psychologist teaching in the Kent College. He is in two years long relationship with Elise, they are deeply in love. David decides to make a proposal on top of the cathedral, their favourite place. During his preparations he becomes a witness of murder. The killer notices him, and although David manages to escape, Elise falls victim when she gets to the roof. David goes to police, they are unable to identify the killer and let him know that the investigation will be a long process. He is devastated, soon his sorrow turns to anger. The next night his house is raid by the same man, David is nearly killed, but the help comes on time. Raging about Elise's death, David suggests to set a trap for the persecutor and take his revenge.