In late spring, the New York Civil Liberties Union won a class-action lawsuit against the New York State Department of Corrections. It was over reforming the use of solitary confinement in New York State prisons, where inmates are imprisoned alone in 6x9 cells for up to 24 hours a day. The 4,000-strong solitary population will now drop by a quarter, and guidelines have been introduced to cap the time a prisoner can stay in solitary to 30 days for a first time offence. But in the eyes of the United Nations, more than 15 days in solitary confinement is torture. Many think the lawsuit has not done enough for the thousands in New York State prisons that remain in solitary. This summer Life of the Law is presenting some of the best and the brightest new voices in investigative reporting and audio production. This is part four of our New Voices Series from Oliver Arnoldi of the Columbia University Graduate School of Journalism. OLIVER ARNOLDI is part of the documentary film program at Columbia University Graduate School of Journalism. He formerly worked on the arts desk at the Telegraph in London and was a reporter at the Tibet Post in Dharamsala, India.