This 33-page report documents how the Tunisian authorities continue to hold as many as 40 of the country’s more than 500 political prisoners in long-term isolation in prisons around the country. This policy violates Tunisian law as well as international penal standards, undermining government claims of prison reform. The report is based in part on interviews with the relatives of prisoners in isolation. The government did not reply to the organization’s requests for access to prisons and for information about its isolation policies.