A "Remux" is the exact same video and audio quality as a BDMV (untouched), but it has been packed into a single .mkv file. This gives you the quality you are looking for without the hassle of navigating a complex folder structure.
Episode 3 is the “pressure cooker” installment of Season 5. After the setup in E01 and E02, this episode turns the screws on DS Jenn Townsend (Marsha Thomason). The missing Lisa Armstrong case expands, and a new piece of digital evidence forces the team to confront a suspect who was previously untouchable. the bay s05e03 bdmv