Mumbai, Jan 29 (ANI): Lead actor of bollywood's much awaited thriller ‘Rahasya' Tisca Chopra while promoting the film in Mumbai has said it's a very gripping film. The film which is said to be based on India's biggest murder mystery Aarushi Talwar's murder case is directed by Manish Gupta. Rahasya also features Kay Kay Menon, Ashish Vidyarthi, Mita Vashisht and Ashwini Kalsekar in the lead roles and is slated for a 30th January release.