I don't remember the last time I saw a Tamil movie which was a mass movie and a good thriller. Petta fits the part as mass movie but it was not a thriller. Kaithi has some high voltage scenes. The film is full action from start to end. There is no hero flashback scenes or romantic dance number with leading couples. There's not even an female lead because there's no need for it. I liked all these elements in Kaithi. Karthi did an excellent job and carries the film on his shoulders. The direction and screenplay was also very good and the movie will not bore you anytime even though its full action. The bgm was also cool. Overall, Kaithi is a must watch movie in theatres and everyone should watch it than Bigil. Waiting for a sequel.