No not the so-so French action flick
B13 but the new desi horror flick with Madhavan. I won't go into much detail since Ravi was working on a review but I liked it a good deal. The main plot feels reasonably original, the film has an eerie resonance in some parts and is laugh-out-loud camp in others, but enjoyable both ways. Some lovely night-time and B&W photography by old-timer PC Sreeram.
The opening scenes, where it goes the RGV-horror route, are the weakest, so stick with it past the first 15-20min and your patience, depending on your expectations from the film, will likely be rewarded.