Top S.I.S. agent David Callan, previously "retired" due to lost nerve, is recalled to handle the assassination of German businessman Schneider, whose true identity remains unclear.
Armchair Theatre
David Callan, a former top agent for the S.I.S., is recalled to duty after a years-long forced retirement, due to a perceived loss of nerve, to handle the assassination of Schneider, a German businessman with uncertain motives.
