'Kill' review: A unique, relentlessly violent Indian action banger

Picture, if you will, the iconic hallway fight in Oldboy — which laterally tracks an outnumbered hero's brawl with dozens of goons — spread out over an entire feature that also stops to introduce and endear you to every single villain. That's about as close as you can get to describing Kill using well-known reference points, because Nikhil Nagesh Bhat's locomotive action thriller isn't just viscerally effective, it’s also wildly original.

Set aboard a long-distance sleeper train, its politically charged...