In the beginning, I was confused whether the movie is a Thriller or is it a suspense-horror movie. As the title suggest, "Gaslight" - psychological thriller, I was expecting some thrilling twist and turn in the plot unlike the movie "Sixth Sense", but was totally disappointed after watching it for first 20 min.
One could easily make out the climax and the story after watching it for first 20 minutes.
Now about the acting except Chitrangada Singh all others need to take some more good lessons about acting. And for Sara, she should quit bollywood, and focus on her other productive priorities.
Movie is totally fail. Waste of time :(