'Setting out at first to illustrate how a discontented young industrialist can be seduced by Communist trade unionists, he enlivens this austere topic by implanting Pringle, the young man, in a devout Catholic family.
'Having thus touched domestic conflict alight, Mr. MacCormick displays Pringle's loyal girlfriend waiting wanly over cups of coffee while he attends wicked meetings, and confronting him, when he arrives, with a gaze of mute accusation. Quite the strongest of the situations is the one in which Pringle's eldest brother brutally unmasks himself as the hardened party member responsible for all the previous agitation'.
Source:
'B.B.C. Television', The Times, 17 June 1957, p.3.