Shutter (2004)

The film that put Thai horror on the world map. Banjong Pisanthanakun and Parkpoom Wongpoom build everything around one idea, a photographer finding smudges and figures in his prints after a hit-and-run, and they wring dread out of the darkroom like few films before or since. Its reputation abroad is easy to measure: Hollywood remade it in 2008, and the remake is the one to skip. The original keeps a guilty secret at its center, so the scares are really about what the couple did, and the last image is one horror fans still bring up.