PLEASE HELP

I have received a photograph from someone regarding my bhbahi's earlier secretive marriage with which many legal cases done by my Bhabhi can turn in our favour.....

The problem is that it is the only proof which can be shown to the various courts....I do not have any other proof in terms of her earlier marriage certificate or divorce certificate...

If this phtograph is shown, the opposite party might claim that this photograph is not a genuine photo.

what legal steps can I take to get the photopgraph verified, is there any sort of attestation for photographs .....This is my only proof & i have to get some benefit out of it....

It shall be better if you can acquire,negative, memory card, etc from which the photograph was developed.

 Some one from the acquintaces of the lady e.g. reltives, colleagues, friends etc may lead you to the family of previous in laws.