The Lone Brit on 13: A Prisoner's Hell in Spain's Toughest Jail

Better to be Feared: Jail Life in the Raw

El Infierno: Drugs, Gangs, Riots and Murder: My time inside Ecuador’s toughest prisons

In the Shadow of Papillon: Seven Years of Hell in Venezuela's Prison System

Getting Life: An Innocent Man's 25-Year Journey from Prison to Peace

Inside: Life Behind Bars in America

Texas Death Row

The Parkhurst Years: My Time Locked Up with Britain’s Most Notorious Criminals

Banged Up!: Doing Time in Britain's Toughest Jails

Maximum Security

The Cocaine Diaries: A Venezuelan Prison Nightmare

The Damage Done: Twelve Years Of Hell In A Bangkok Prison

Orange Is the New Black: My Year in a Women's Prison

Public Executions: From Ancient Rome to the Present Day

Banged Up Abroad: Hellhole: Our Fight to Survive South America's Deadliest Jail

The Sun Does Shine: How I Found Life and Freedom on Death Row (Oprah's Book Club Selection)

Traitors of the Tower

Inside Alcatraz: My Time on the Rock

The Hot House: Life Inside Leavenworth Prison