TLS 860

[flocker]

LAST ONES:
14 ac Goddesses foundations - C?S?I Can this be CESTI - why?
12 ac Talk for thorough overhaul in traditional creative work - First word looks like FOLK but don't get the wordplay
10 ac The first word must be TRAP??

[NC4BBQ]

12ac: FOLKART (anagram of TALK FOR)

10ac: TRAPSTAIR

[mike11111]

Cestus (plural Cesti) was a girdle worn by goddesses, hence foundation as an undergarment.

[walgraver]

10A Tripstair ? a staircase where one step is higher than the others - giving warning of an unwanted intruder who doesn't know the building and will trip

9D - help. I have ???T?R?U???R?? - Walter somebody ?

[pcoles]

I think Master Humphrey is the person you're looking for, Walgraver...