Pantulamma is a 1978 Indian Telugu-language drama film directed by Singeetam Srinivasa Rao.
Rajesh's friend's (acted by Pradeep Shakthi) sister Sharada (Lakshmi) joins as the boys stay-at-home teacher.
The Doctor tries to force himself upon Sharada and when she resists, he boasts that Sita was in love with him and was about to divorce Rajesh, before she died.
Seeing the photos in the story, Rajesh believes Sita really cheated on him and is in deep sorrow.
She is able get her hands on Sita's diary which details how she was forced by her sister-in-law to go to the doctor's house where she was drugged and her photos were taken and used to blackmail her, resulting in her killing herself.