When an oddly-dressed man visits his visits his office and explains that Marker is the only man capable of helping him, the enquiry agent begins to see problems ahead.
When a husband hires Marker to investigate his wife - but he, too, 'carries on' with another women - Marker finds the season of goodwill a little hard to bear.
Vyvyan Reveldale has everything going for him. So what reason could he have for throwing everything up and disappearing? His father asks Marker to find out.