Curd Jürgens
In January 1943 the German army, afraid of an Allied invasion of the Balkans, launched a great offensive against Yugoslav Partisans in Western Bosnia. The only way out for the Partisan forces and thousands of refugees was the bridge on the river Neretva.
The Assassination Bureau has existed for decades (perhaps centuries) until Diana Rigg begins to investigate it. The high moral standing of the Bureau (only killing those who deserve it) is called into question by her. She puts out a contract for the Bureau to assassinate its leader on the eve of World War I.