India, June 24 -- It was June 18. Businessman Ketan Vishal Agarwal had gone to Lohagad Fort near Lonavala with his fiancee Siya Goyal. It was meant to be a birthday outing for Siya, who was to turn 20 the next day.

The first version of what happened came from Siya. She told police that Ketan slipped while taking photographs near the fort and fell into a valley.

Police initially treated it as an accidental death. A report was registered, and the case appeared closed at the surface level.

But, Ketan's family was not convinced. They said he was an experienced trekker who knew the terrain well and would not have lost balance so easily at that spot.

That doubt changed everything.

Ketan's family raised questions with investigators. They po...