Large ancestral mansions with tales unknown, deep mysteries looming for generations, exquisite interiors hiding years of misdeeds; the very factors that make history humane also make the places witnessing them areas of massive interest. A family drama unfolding in such a backdrop, with a cast executing fine performances, ought to be acclaimed. Yet, the true beauty of the 2007 psychological horror-comedy “Bhool Bhulaiyaa” lies in its appeal, even after all these years.