Naan Yaar Theriyuma is a 1967 tamil suspense thriller. Jaishankar returns from abroad to see his mother, but she has been abducted by the villain OAK Devar, a lookalike of Jai Shankar’ s grandfather.
There is a letter from his grandfather saying that he has hidden a huge amount of money in a secret place at his Mumbai home and enclosed half portion of the drawing indicating its location keeping other half with him.