The document discusses the openings of several thriller films and how they use sound and editing techniques to set tension and suspense. For Source Code, there is exaggerated train sounds to build tension. Inception uses loud water sounds and a lens flare to set an eerie scene. Prisoners starts silently but then a gunshot sound loudly kills tension. Shutter Island uses eerie music during flashbacks and a countdown music to draw attention. Seven has enhanced kitchen and radio sounds to feel important while rainy outside contrasts the dark mood. Hanna uses enhanced footsteps during a fight and eerie music to foreshadow the ending.