A report by captured British agent Sigismund Payne Best of his imprisonment in Sachsenhausen concentration camp during the Second World War. Best spent nearly the entire war in German captivity, and in this report gives an extremely detailed account of the conditions in which he was held at Sachsenhausen. The report includes a description of the cells in which he and other inmates were held; floggings and other tortures administered to the prisoners by the guards; the shooting of prisoners in their cells; the theft of food by the guards for sale on the black market; the poor health of the prisoners, including epidemics of typhus; the treatment of the Russian prisoners of war who began arriving in the camp from 1941; the use of the prisoners as slave labour; and the organisation of the camp guards, including a list of names with detailed description of their behaviour during Best’s time in the camp.