Evin on fire: What really happened inside Iran's most notorious prison

For more than 40 years, Evin prison in Tehran has been the most visible symbol of the Islamic Republic's authoritarian rule, a menacing complex built on fear and absolute control. Unrest rarely breaches the prison walls.

But on the night of Oct. 15, massive fires tore through Evin, killing at least eight people and injuring 61, according to state media. Families of prisoners fear the true toll is much higher.