Great storyline with heart wrenching unexpected climax. Two things stands out clearly - Varalakshmi's brilliant acting and human nature. Each character is so well represented in a way, we humans could all relate to...greed, desires, compassion, self-respect, trust, betrayal, blind beliefs etc etc.
Even the arrack owner despite knowing about the guest is not shown stopping karuppuwamy that night from drinking, as the intentions wasn't to give any hint continuing be the normal businessman, and wanting for surprise element to be discovered the next morning. Santhosh's letter at the end is bang-on stitching all the threads intact of a family member.
Great script !! Definitely a watch.