While primarily a searchable database, NamUs allows users to download prints, posters, and compiled case reports regarding long-term missing persons and unidentified remains. How to Analyze a Case File PDF Like a Pro

Flight path maps, transcripts of radio traffic between the cockpit and air traffic control, descriptions of the physical evidence left on the plane, and hundreds of suspect interviews.

However, "top" is subjective. For some, a "top" PDF means the largest file size (containing thousands of pages). For others, "top" means the most case—one where a fresh pair of eyes on the PDF might spot the clue the original cops missed.