This 73-page report provides the first comprehensive account of the treatment of political detainees in Tehran’s Evin Prison and in secret prisons around the capital since the government launched its current crackdown in 2000. Human Rights Watch has documented systematic abuses against political detainees, including arbitrary arrest, detention without trial, torture to extract confessions, prolonged solitary confinement, and physical and psychological abuse. Human Rights Watch calls on the Iranian government to release all political prisoners and effectively prohibit torture immediately.