Rahasyam is a Malayalam film directed by J. Sasikumar and produced by K. P. Kottarakkara. The film stars Prem Nazir, Sheela, Jayabharathi and Adoor Bhasi in the lead roles. The film has musical score by B. A. Chidambaranath and the lyrics were written by Sreekumaran Thampi.
Babu, a wealthy heir, returns to his ancestral home, only to find that his aunt has ruined their family name. However, he strives to rebuild the lost honour while also pursuing his love interest.