Iruttu is a 2019 Indian supernatural horror film written and directed by V. Z. Durai. It stars Sundar C., Sakshi Choudhary and Dhansika the lead roles; and Vimala Raman, VTV Ganesh, Yogi Babu, and Manasvi Kottachi in supporting roles. Girishh G. composed the film's music and cinematography was handled by E. Krishnasamy. The film had its theatrical release on 6 December 2019 and opened to generally mixed-to-positive reviews. It was later dubbed in Hindi and released under the title Qatil Saya.

Plot

In Hillstation Sigapurahali at noon, a black figure is seen walking. Suddenly the hill and the village go dark. Six men are killed by an unseen force in hora grass, by termite attack and snake bite. Police arrive to investigate. Officer Palraj explains to a superior officer there are no traces of evidence at the scene of the killings.