Siren - A good Investigation thriller

- A good investigation thriller ruined by less character development. The story Is simple. Thilagavarman - Jayam Ravi . A man who Is arrested for allegedly killing his wife gets out of jail on parole. And tries to prove that he hasn't killed his wife. This Is when a mysterious series of murders start and Inspector K. Nandhini - Keerthy Suresh. an officer suspended for killing an accused. Is appointed for the case but. Soon she starts to get suspicions on Thilagavarman for the killings. And who Is the killer Is It really Thilagavarman or somebody else and what Is the motive behind these killings? Is the story. The performance by Jayam Ravi as Thilagavarman Is good. But Keerthy Suresh as Inspector K. Nandhini It's clear she Is struggling to act. The story Is good and also Is keeps you hooked throughout and. Overall - A good Investigation thriller that has It's Ups and downs...