On the film posters it was written do you want to know the secret after the success of the film there were others posters out on the roads saying the secret is out and it's a hit.
Dino Morea and Bipasha's voices were dubbed by Vikram Bhatt and Mona Ghosh Shetty respectively.
Ramsay's Brothers the masters of horror films had lost their glory and there were no horror films made in bollywood since years,but the success of Raaz inspired many filmmakers to make horror films.
Paul McCartney of The Beatles was in Mumbai during the special screening of the film and for the first time ever watched a Hindi film.
The remake of Hollywood film What lies beneath.