An isolated island, a closed community, an outsider who brings danger—*The Sanctuary* is a psychological thriller that builds intense suspense through minimalist settings. Every line of dialogue either advances the plot or deepens the mystery, leaving zero room for redundant subtitling. When handling high-tension thrillers like this, LI TRUST pays particular attention to precisely matching subtitle timing with the film's editing rhythm. In suspense-driven scenes, even a slight timecode offset can significantly undermine the viewing experience—a level of accuracy far beyond what standard dramas require. LI TRUST applies a frame-level timecode verification process, conducting independent accuracy checks on every high-tension scene in the film. Additionally, the pacing of key information reveals is a deliberate narrative choice by the director; the subtitles strictly follow this rhythm to avoid "leaking" information prematurely and breaking the suspense. The final deliverable was a standard SRT file compliant with UK BBFC distribution technical specifications.