The flawed rescue plan in the 1970s in the Midlands to which Jim refers was the kidnap and murder of Leslie Whittle by Donald Neilson, known as 'The Black Panther'.
Only episode where the title is not displayed on screen.
When ceclie paoli left the series her absence was explained Francine went back to France
John Nettles also starred with Celia Imrie in Midsomer Murders in 2001.