New Delhi, June 15 -- It began as a near-hopeless case, a fatal hit-and-run on one of Delhi's busiest highways, no eyewitnesses, no visible clues, and not a single working CCTV camera at the actual crash site. But four days later, with dogged investigation and a relentless sweep of over 100 surveillance cameras across two cities, the Delhi Police cracked the mystery wide open.

The tragic incident occurred on the night of June 7 near the Shiv Murti on NH-8, a location infamous for high-speed traffic and chaotic late-night movement. A 27-year-old man, Ashish Kumar, was struck by a speeding vehicle while riding his two-wheeler toward Gurugram. The car didn't stop. Passersby alerted the police, and Ashish was rushed to Medanta Hospital and lat...