8a, Verdict is in code to be uravelled (8) ??C?????
12a, Assistant first-class from around Paris (4) ???E
18a, New US city a loner's wandering round (7) ?R????S
20a, Tape some made more of (4)
Hi boxtops, yes I suggested APES because it was in the clue (consecutive letters) but I wasn't sure it quite meant 'made more of' other than perhaps it means 'copied'
If it is APES I think the clue should have been .... "makes more of" as in copies (which can mean apes).
But I'm not realy an expert- maybe CUPID is right or we need someone like bibblebub or lie-in king