Witness) is a 1983 Indian Tamil-language action film, directed by S. A. Chandrasekhar and produced by P. S. V. Hariharan.

The film stars Vijayakanth, Viji and M. N. Nambiar.

[3] After a policeman marries the woman of his dreams, he is tasked with catching a dangerous criminal who poses a threat to societyChandrasekhar initially planned to remake his Kannada film Geluvu Nannade as Vetri Namadhe with Vijayakanth and Mohan in lead roles; however the project was shelved after Mohan left the film hence Chandrasekhar started another project which eventually became Saatchi.

[4] The lead role was offered to Prabhu, and later Karthik, both of whom declined; Vijayakanth was ultimately cast.

[7] Jayamanmadhan of Kalki praised the performances of Vijayakanth and Nambiar but panned Viji's acting and concluded calling it a fast-paced film.