Take No for an Answer (S7E11): A chief office clerk (Jenks) is acting strangely at home, so his worried daughter asks Marker to investigate, leading him to some strange office practices and a bit of fraudulent activity and greed by Jenks and his office manager.
It features Alfred Burke, Peter Childs, Richard Pearson, Stephen Yardley, and Michael Turner.
Public Eye is a British television crime drama series, which originally aired between 1965 and 1975. Frank Marker is a cynical, dour and world-weary, private eye, who is frequently the unwitting stooge in bigger criminal wheels in his attempts to make a tenuous living.