The Missing Stone.

This 5-episodic series is a story of a happily married couple, Dhwani (Bidita Bag) and Sahir (Barun Sobti). With Dhwani's birthday just around the corner, she is expecting the usual surprise from her younger sister Payal (Rashi Mal) who plans something elaborate each year. This year, Payal has organized a weekend getaway at a resort but this surprise soon turns into a shock when Payal does not arrive at the resort. The world stops for Dhwani, when she realizes that her sister is missing, or worse - she may be dead. The romantic birthday getaway soon becomes a trap for Dhwani, where she's left putting together the clues of the puzzles that will help her find the truth about Payal.