The McKenzie Break is an unusual POW escape drama in that the would-be escapees are German prisoners, held in a Scottish camp. When a Luftwaffe pilot is murdered in the compound, British major Ian Hendrey investigates. He suspects that the killing is tied in with a complex escape plan, engineered by German commander Helmut Griem. Before the inevitable break, the prisoners form into the sort of separate factions and pressure groups that fomented the Nazi upheaval in Germany in the first place. Based on a novel by Sidney Shelley, The McKenzie Break was actually filmed in Ireland rather than Scotland.
~ Hal Erickson, All Movie Guide