Subtitles for the documentary series are available through several major streaming platforms that host the show. Streaming Services with Subtitles
: Subtitles are available on Prime Video, though the specific languages offered can vary depending on your region (e.g., UK vs. US versions).
If you have a local copy of the series and need external subtitle files (usually in .srt format), you can search reputable databases such as: OpenSubtitles Watch Nurses Who Kill - Season 1 | Prime Video - Amazon UK