The theme and presentation of Vignesh Raja's Por Thozhil, an effort by Ashok Selvan and Sarath Kumar, caused a sensation, and many viewers began to acquire a taste for films that are related to investigative criminal thrillers. Therefore, in this article, we have compiled the top 20 list of Kollywood's investigative criminal thriller films. Scroll down and enjoy exploring the films that will genuinely draw you into the world of serious investigation.