Rahasya may be a thriller. Film chief and maker go to Bakkhali with his recently hitched spouse Alankrita and his companions for a get-away. She meets an crystal gazer who predictions that Srijit will slaughter her in a week. Srijit assaults her and she cuts him in self-defense. Slowly its uncovered that it's not Srijit but Alankrita and her boyfriend Sovereign who are the fiendish masterminds. Alankrita murders ruler .