This is quite hard. Here we go; not strictly in chronological order, other than my top ones.
16) Case Of The Impossible Murder – The entire climactic sequence with Abhi-Daya demonstrating the murder, that brief shocking moment and Dr. Salunkhe's acknowledgement of ACP sir having been right.
15) Case Of The Mysterious Gift – The duo scene in the Qualis, Daya sir explaining ACP sir's POV to Abhijeet sir and convincing him to return.
14) Case Of The Missing Man – The final scene, ACP sir regaining his eyesight and paying his respects to the dead father. I personally find this to be one of the most genuinely touching and human moments ever.
13) Case Of The Unknown Body – ACP sir being welcomed back to the bureau by the entire team.
12) Case Of The Hidden Sniper – The climax; Abhijeet sir putting his life on line to protect the officer, Daya sir lifting up the sniper like a duffel bag. 😆
11) Case Of The Stolen Car (old one) – The thrilling final bomb-diffusing scene.
10) Abhijeet Ka Intequaam 2 – Abhijeet sir finally recovering, the team greeting him and hesitantly telling him about Sia's apparent murder, and his reaction.
09) Kissa Daya Aur Lapata Bacche Ka 2 – Our trio singing the lullaby for the little child, Abhijeet sir quietly observing ACP sir getting emotional.
08) Case Of The Bomb Robbery – The final reunion scene at the hospital, ending on both a triumphant and humorous note.
07) Case Of The Injured Witness – Daya sir choosing duty over personal life and refusing to harm the witness, and then confessing to ACP sir, devastated.
06) Face Off – Abhijeet sir resisting Shamsher's temptations and firmly displaying unwavering loyalty towards ACP sir.
05) Case Of The Stolen Dynamite – The entire climax, up to the "I'm proud of you, my boy" moment.
04) Aakhri Chunauti VIII – Duo forcefully moving ACP sir to safety away from the house, the blast and ACP sir's reaction.
03) Case Of The Blind Witness – The opening, where ACP sir is told that he's lost his eyesight, his reaction of utter shock and initial denial.
02) Beherupiya – I don't think this one needs any intro, but Daya sir's "aapko theek se jhoot bolna bhi nahin aata, sir" is always most gripping for me. A clear display of his unhesitant understanding and acceptance that death is always an occupational hazard in the line of duty, and happy endings are an exception rather than the norm.
01) Lapata Ladkiyan – Daya sir's triumphant return to the bureau!