Nerariyan CBI (2005)

Set against the lavish backdrop of Animangalam Tharavad, an aristocratic old mansion, this suspenseful investigating thriller is the fourth sequel of the CBI series. A lot of strange things and a few murders have happened here, when Anitha (Gopika), one of the members of the family comes with her two friends for holiday. The same night Mythili (Samvrutha) dies mysteriously and police writes off the case as an accident. Four years later Sai (Jishnu) an IPS officer and Anita?s lover meets Sethurama Iyer at the airport and briefs him about this unusual case in which some supernatural are blamed for the murder. Iyer agrees to investigate the case as a challenge and unfolds the mystery behind the murder, with the support of his usual gang of Chacko (Mukesh) and Vikram (Jagathy). And finally as the story unfolds in the climax, the question remains, will they be able to expose the true killer?