A Lullaby To Sister) is a 1990 Indian Tamil language film directed by K. S. Madhangan.

[1] Gopi, a poor youth, lives with his mother and his uncle Baba.

Prakash, who looks like Gopi, arrests an innocent young woman, Priya.

Prakash arrests his sister's killer, but due to the finance minister's kidnapping, he has to release him.

[2] Thangaikku Oru Thalattu was released on 23 November 1990 alongside another Arjun starrer Aatha Naan Pass Ayittaen,[3][4] and became a success.