Would you call W/O Ram an investigation thriller or a suspence thriller or maybe both. Anyhow, it's a thriller, though you may not feel the thrill while watching it.
There are parts in which were really exciting and then there were parts where the suspence felt fake. I can't have a single opinion about this one.
Investigation scenes were good. Most of it was done using just Facebook, whatsapp and Skype. Though, some parts of investion were unclear. Adarsh Balakrishna was not convincing in his role. The police station scenes were just replica of any other telugu films.
The twist in the middle was good, after that the ending did not feel unexpected.
I didn't feel any resemblence to Kahaani(2012) expect that the character the helpful constable was similar in both.
W/O Ram depends tol much on Lakshmi Manchu, there's nothing much to notice beside her character.