The last 5 letter word gives me dupe or fool.
Equivalent phrase would be: Strict SS believed dupe.
What does this in the preamble mean?
The position of these
extra letters in the clue indexes
a new order for the same letters,
each used once, which spells
out a description.
Yes, that's about it (meaning he was, 'taken in by a fraudster').
If you count the number of letters in the clues upto the extra letter you get the position of that letter in the 2nd arrangement (1d starts with 'C[h]at...', so the [h] is the 2nd letter, 2d starts 'See rel[a]y...', so the [a] is the 7th etc etc). The letter count for the new phrase is 5,3,3,10.
Sorry. I am not any wiser.
Since there are 22 down clues and 6,3,3,10 adds up to 22, is it just an anagram of extra letters?
First 6 are 2,7,19,9,16,4. Does not seem to make a word.
Yes, it's an anagram but the order is given by the placement of extra letters. Only 2 of the numbers you've given make up the first word, 2[h] + 4[i] - so your first word is (1)(2=h)(3)(4=i)(5)(6).
After working out the new arrangement it would help to do a word search for a name in the grid - reading diagonally (it might even help as a shortcut to the theme).
Thanks ProfessorM.
Got Dutch name and the cheater's name.
I am assuming that the sign means two dots on top of a letter.
Had no idea about the cheating.
Have you finished Listener? Not even half way through yet.