Tennessee Bureau of Investigation - As introduced, requires the bureau to maintain with each investigative case file copies of all original investigative materials, including audio and video files, recordings, transcripts, documents, reports, paperwork, and other print or digital media generated by the bureau and germane to the investigation by the bureau. - Amends TCA Title 4; Title 8; Title 10, Chapter 7, Part 5 and Title 38, Chapter 6.