S1E164 — The Case Of The Man With Many Names: Part 2

With the revelation that there indeed was a box that was thrown into the lake, the Officers quickly call for a search team and start looking for the box. But to their surprise, the box was empty. Dr. Salunke and the forensic team is convinced that there were no traces of a human dead body in that box and the Officers had made a mistake. What could solve this mystery?