Dinesh Vijan’s horror-comedy universe expands with “Thamma,” a vampire film starring Ayushmann Khurrana, Rashmika Mandanna, Paresh Rawal, and Nawazuddin Siddiqui. Samantha Ruth Prabhu initially joined but exited due to health issues, leading to Rashmika’s casting. Notably, Ayushmann and Aparshakti Khurrana will share the screen for the first time in this Diwali release, adding to the popular franchise.