Sorry to hear about the wife and kid and the trauma they are in. Get in touch with the Indian Embassy and do the needful to send them home. CID cases may take long and I think they have the right to keep without revealing the reason up to 30 days. Hiring an advocate will cost you a bomb in this part of the world.

Better not to wait for the release of the HUbby , let the family go back home and return once he is released.