Is the perfect murder dead?

The past fortnight has been a terrible one for anyone hoping to get away with murder. Three killings, four accused, three very different crime scenes, and all the suspects were tracked down within hours.

Undone by the digital breadcrumbs they had left behind.
What got the man who stabbed a 22-year-old to death on a Mumbai local last Tuesday was a video because someone is always filming. Bystander clips went viral before the train rolled into the next station, and the Western Railway’s 2,200 CCTV cameras strung across the city, 400 of them with facial recognition, did the rest and pulled a single man out of a city of millions as he tried to flee.