A well-paced and well-timed thriller. Its about time that Bollywood came up with a crisp, real-time edge-of-your-seater (a la Speed or Phone Booth).
The gripping aura of terrorism has become a universal and widespread "movie thriller premise " now. Quite like "serial killers" back in the 90s.
If this is an original story, it is undoubtedly a great concept. In terms of handling, the run-up to the climax could have been more effective and subtle, post revelation of the twist. The dialogue between Anupam Kher and Naseeruddin Shah could have been more impactful. But that's just nitpicking, as the effort is more than laudable.
Naseeruddin Shah is world class in a subdued and effective performance. More short and well-scripted thrillers, Bollywood!