In 1988, the Islamic Republic of Iran suddenly locked down its prisons, wherethousands of political prisoners were serving their sentences, some as long as seven years.

Five months later, the prison authorities summoned the prisoner families and gave each one a bag:

"Your prisoner was executed."

-- no explanation, no last will, no body, no burial location.

To this day, no Islamic Republic official has assumed responsibility. To this day, talking about it is a taboo in Iran.

But now brave survivors and family members are speaking.