Velutha Kathreena is a 1968 Indian Malayalam film, directed by J. Sasikumar and produced by P Balthasar based on the famous novel of the same name written by Muttathu Varkey. The film stars Prem Nazir, Sathyan, Sheela and Jayabharathi in lead roles. The film had musical score by G. Devarajan.
A television serial named Velutha Katrina was telecast by Kairali channel in 2006, where Sheela returned to play the title character of Katrina. The serial was not a spinoff of the movie. It just utilized name of Sheelas memorable character in the movie.
Source: Wikipedia