Last few:
4 across: Sharp metal (cut copper);
5 down: Child who's back for good;
11 across: ...man who's caring content;
12 down: His heartless back joke did well;
13 down: Chasm described as small: Brute taking fluid around a city;
22 across: short tongue leaving toad's mouth;
23 down Gather upper houses appoint leader;
20 down: Calm wizard behind a little spell;
18 down: Different books to She, objectively speaking; Single lady in the US or overseas.
Any help would be much appreciated.
You MUST have some letters? and last 'few'?