A Melody in the Haunted

In 2002, Rajiv Kanakala (age 40) found some handy cam tapes shot by his childhood friend Ashok Verma & his family - before they died in a house - which is haunted (at least that's what neighbors believe). Those tapes revealed some supernatural occurrences and are beyond human reasoning. The police couldn't explain them and closed the case - citing reason as, parents (i.e. Ashok & Aarthi) committing suicide and killing their kid (Sonu) due to psychological problems. But Rajiv is not convinced, still deeply disturbed at what he saw, he wants to show to the world the truth.