Conventions of film

In my film opening, i used Levi Straus' narrative theory of binary opposites. I have shown this through light and dark scenes, also an opposition in settings such as the city and the country. Another narrative theory i have used is Todorov's, i have set an equilibrium at the start by the main characters leading normal, happy lives. The disrupyion comes when the two main characters see eachother in town, this is shown with flashbacks of a disturbing past. I have challenged the usual codes and conventions of a thriller by making the opening fairly light hearted and slow paced. The film however, pickes up throughout. The codes and conventions i have used seem quite subtle apart from the image of a dead body.