Some prisoners are kept in jail without any evidence at all

The "undertrials" of India are those many thousands who have committed a minor offence, and then spent years in jail waiting to appear in court.

As their families fall apart outside they sit behind bars and gradually lose all hope.

Rupa Jha travels to India to learn why people have got lost in the county's judicial system. Is anyone trying to find them?

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This programme was first broadcast in June 2007 and was produced by Rupa Jha BBC's Hindi Service.