The show centers on the lives of a motivated police officer who manages his work and family commitments while attempting to solve an acid attack case.

[7] Saibal Chatterjee of NDTV rated 2.5 stars and wrote "Kaalkoot, comes close on the heels of two investigative thrillers (Amazon Prime Video's Dahaad and Netflix's Kohrra) that have raised the bar for the genre, a comparative assessment is inevitable, if odious.

"[8] Shubhra Gupta of The Indian Express wrote "“Kaalkoot’ would have been much better if it were tighter: the writing makes the scanty material stretch too much, and you find yourself getting impatient at the long loops.

"[9] Archika Khurana from The Times of India rated 3.5 stars stating "‘Kaalkoot’ is a thought-provoking and sympathetic series that doesn’t shy away from uncomfortable truths.

"[10] A critic from Rediff.com stated "Like any other good show, the nuanced storytelling in Kaalkoot offers more than just surface-level entertainment as it compels you to ponder on harsh realities of our society.