The killer entered and left through the service elevator between 9:15 PM and 9:48 PM. Start by ruling out suspects who can prove where they were during that window. Who has a solid alibi — and who doesn't? And be careful: having a motive is not the same as having the moment.

Someone in this case file tells you exactly who to suspect — in writing. Before you believe it, do the physics. Where was that person between 8 PM and 10:15 PM? How long does it take to drive from there to Koramangala? Could they have been inside the service elevator at 9:15 PM? A motive can be real and an alibi can be weak — and the person can still be innocent, if the clock says so.

Follow the money, not the words. The financial reconciliation compares a summary "provided by the estate's financial manager" against the real bank records — read Annexure C's numbered notes carefully, then ask: who is the estate's financial manager? One suspect mentions having a spare key early in their statement — but leaves themselves out when police directly ask "who else has a key?" Read Karthik Nair's interrogation again, carefully. Then check whose bank statement pays a monthly EMI to Hexa Motor Finance — and what make of car was caught on the basement camera.

The autopsy found two injections at the same spot on Arjun's left elbow — one a normal vitamin shot, the other the one that killed him. Who gave the first injection, and what does that tell you about who set up the second?

Look at the bank statements. There's a company name that shows up in two different people's accounts — money going out of one and coming into the other. The amounts match. The dates are just days apart. Find that company.

The insurance policy's medical examination was signed by a doctor — but the name is shortened. Check the registration number against the employee ID on other documents in the case. The same person who signed off on the insurance upgrade also requisitioned the substance that killed Arjun.

Think in three categories: money, medicine, and messages. One piece of evidence shows a financial link between the killer and the accomplice. One shows who had access to the substance used. One shows them coordinating on the night it happened.

Money: follow the Sunrise Wellness Solutions trail across both bank statements — notice the amounts and dates.
Medicine: check the pharmacy requisition form and see who requested the substance that matches the autopsy findings.
Messages: the recovered deleted texts come from two handsets the police could not put names to — Device A and Device B. But one of those devices left a paper trail. Read what the forensic note says about Device B's SIM, then look for that same detail somewhere in the financial documents.

The three strongest pieces:

1. Sunrise Wellness Solutions — one suspect sends money INTO this company, and the accomplice receives money FROM it. Same amounts, with a 3-day gap each time.
2. The pharmacy requisition — concentrated potassium chloride, ordered March 10 — the same substance that killed Arjun. Look at who signed the form. (Don't be distracted by the other name in the dispensation register — oral maintenance tablets are not concentrated injectable solution.)
3. Device B (IMEI ending 9082) — the forensic note says its SIM is a corporate postpaid connection. Now read the financial reconciliation's "Registration Particulars": one of the phantom vendors has a corporate SIM on its account, tied to a handset with that exact IMEI. Whoever controls that shell company was holding Device B. And the phone records still show one direct call between the killer and the accomplice — March 13, 10:22 PM, the same evening as Device B's deleted conversation.

Something was coming the following week that would have been very dangerous for the killer. Look at the emails in Arjun's inbox — one of them looks completely routine. It isn't.

A year-end financial review was scheduled. Find the email from the accounting firm and check two dates: when the review starts, and when the statements had to be handed over. Then ask yourself: what would that review have uncovered? (The deleted messages contain a quiet reference to this deadline — "before Monday.")

The review was scheduled for Monday, March 17 — with all statements ready by Saturday, March 15, for preliminary checking over the weekend. If Arjun was still alive when those records were examined, the money problems would have been exposed. Compare the summary the manager gave police (Annexure A) against the real bank records (Annexure B). The numbers don't match — and the review would have proved it. The original plan was Sunday the 16th, after the match. The review deadline made Sunday too late.