"Public Eye" came to an end on 7 April 1975 with the episode "Unlucky For Some". A hotel owner asks Marker to investigate his wife's odd behaviour. It transpires that her first husband is still alive and she is being blackmailed about this. Marker traces the first husband and plans to claim a large reward on offer for doing so, only to find that, 15 minutes before he could stake his claim, the blackmailer has carried out his threat and has therefore obtained the money. Marker is left with nothing and, ten years after he first appeared on British TV screens, Frank Marker still needs to take every case that comes his way in order to make ends meet.