💡 Hints

Thallium acetate is not a naturally occurring poison at a hotel. It had to be deliberately sourced — minimum days in advance. This rules out any impulsive reaction. The killer planned this before the wedding began. Now ask: who had both the motive to plan ahead and the 46-minute absence during the murder window?

Check E03 (CCTV). One suspect is absent from the reception for exactly 46 minutes — the window when she accessed Suite 214 and planted the poison before returning to the reception. The poison was added to the glass, not the bottle (E02). Who has a key card to Suite 214? Look at the key card log when you get to Pack B.

Deepa Singhania discovered in February that her husband had a secret second family in Dubai and had filed for divorce on 10 March — 11 days before the wedding. She bought thallium acetate on Valentine's Day using a shell research foundation (E09 in Pack B). The suite key card log (E10) shows her entering Suite 214 at 11:06 PM and leaving at 11:19 PM — alone, 8 minutes before Harish returned. The wine glass was already set. All she needed was 13 minutes.