Yes! there is the king luck of all.

To give the whole thing away to the baffled Viceroy.

Then denounce Ram Lal to him as the early confederate and later assassin of Hugh Fraser Johnstone! These jewels that I have 'innocently received' will connect old Ram Lal with Hugh Fraser's betrayed trust.

I will hold the murder business back at first.
"Ram Lal or his estate will be finally forced to cash my drafts.

It is clear that Johnstone and Ram Lal have either divided or hidden the jewels.