This medieval castle appears as Ardsmuir Prison in episode 3, ‘All Debts Paid’, of Outlander season 3. It is here that Jamie is imprisoned, with other highland Jacobites. The prison is under the control of Lord John Grey.
Craigmillar Castle is a ruined medieval stronghold located three miles southeast of Edinburgh. Known for having provided Mary Queen of Scots refuge in the 1500s, it is also where Scottish nobles plotted to kill Mary’s second husband Lord Darnley.