Spoiler alert :
This movie is actually a great one with a simple narrative having swinging twists and turns. You think you are comprehending everything that's happening in the movie but the last and final turn is mind boggling. I actually re watched the ending to see the course of events in accordance with the actual reality and let me tell you all of it was right there infront of us - The doctors in the surgery room trying to explain again and again that he is confused and is not thinking clearly, the explosion not hurting his wife and daughter at all, his wife coming out of the sedation immediately after seeing Ray, Dr Bruce trying to reason with him even after the debacle. All of it was right infront of us but I had assumed that Ray was telling the truth, so it made me root for him till the very end and ignore these details.
Another incident that I perceived later on was the complaints from his wife about her head. She complained about it twice in the hospital and it was actually in connection with the rod that killed her.
Overall a nice psychological thriller.