<p>A harrowing account of Afghanistan's notorious Pul-e-Charkhi prison, written by its longest-serving western inmate.<br><br><br>Former soldier Rob Langdon was working as a security contractor in Afghanistan when he was found guilty of murder and sentenced to death in a case that would have been ruled a clear miscarriage of justice in the British legal system. His sentence was commuted to 20 years in jail, and he served his time in Kabul's most ...