Netru Indha Neram.

A group of seven friends plan their vacation to Ooty. One among the seven goes missing. Parallely a serial killer is haunting the town by killing the residents in a period of once in 28 days. The Police who deals with serial killer case, also starts investigating about the one who goes missing. The other six members are being investigated and this segment of the film is shown in a Rashomon effect.Finally it's a matter of "WHODUNNIT?".