It is important to distinguish between the file format and the source. While the term BRRip is often associated with file-sharing sites, the format itself is legal. You can create your own BRRip by purchasing the official Blu-Ray of Murdoch Mysteries Season 9 and using software (like MakeMKV or HandBrake) to convert it for your personal media server (Plex, Jellyfin, etc.).
There are several ways to download or stream "Murdoch Mysteries Season 09 BRRip": murdoch mysteries season 09 brrip