It sounds like you're looking for interesting details, background trivia, or analysis regarding of The Rainmaker (likely the 1997 Francis Ford Coppola film adapted into a TV series? Or possibly a different "Rainmaker" — there’s also a 2015 Korean drama The Rainmaker ?).
However, in your query likely refers to a Blu-ray Disc 9 (possibly a multi-disc set) or a specific release group / encode (like a 720p/1080p BD9 rip — BD9 is a format for fitting a Blu-ray movie onto a DVD9 disc, 8.5GB). If you’re referring to a particular fan release or TV series episode file labeled S01E09 BD9 , that suggests a high-quality rip. the rainmaker s01e09 bd9
Let me know the exact series, and I’ll dig deeper. It sounds like you're looking for interesting details,