Georgekutty would not normally go to jail just because he confesses on his own; in real legal procedure, police custody, arrest, and jail are separate stages, and a court decision is usually needed for continued detention or imprisonment. In Drishyam 3 , the more likely reading is that he was in police custody for questioning/inquiry , while the actual court case, if any, would be handled later — possibly setting up further conflict for a future film.

What likely happened

  • A confession to police does not automatically mean a full jail sentence.
  • Police can keep someone in custody for questioning within legal limits.
  • To send someone to prison for a serious case, the matter normally has to move through court.
  • So if Georgekutty is shown “going to jail,” it is probably either:
    • a temporary custody scene, or
    • a dramatized shortcut for the movie’s ending.

About a possible future case

If the story continues, the court hearing would be the stage where evidence, confession, and police investigation are tested. That is why a Drishyam 4 setup could easily focus on whether his confession is enough to convict him, or whether the case still falls apart.

Simple answer

So, no — he would not usually be sent to jail without court involvement. More likely, Drishyam 3 shows police custody or an arrest-like situation, and the proper court case would come later.

Likely fan interpretation

“He confessed, but that still doesn’t end the legal process.”

That’s the cleanest way to understand it: confession may raise the danger, but it does not replace a trial. If you want, I can also explain this in a movie-spoiler-free legal way or break down the exact difference between police custody, judicial custody, and jail.