The document discusses potential locations, props, and costumes for a horror film trailer. It examines 6 interior and exterior locations in a family home that could be used, including the living room, a child's bedroom, bathroom, kitchen, and garden. It then outlines 4 props that may appear, such as a pen used to write disturbing messages and a teddy bear connected to the main character. Finally, it describes the planned costumes for the 3 main characters - the father, mother, and young girl - and how their appearances establish roles and foreshadow changes in the girl's behavior as the trailer progresses.