I know I'll kick myself, but a helpful hint to finish this off would be most welcome. Apologies to those without the puzzle - I'm sure there are enough Speccie-ites who can help.
All normal clues bar 17 ac completed, for which I have SPE?? Spell?
Have got the four words linked to 10 dn. and am assuming 15 dn is Mushroom and 35 dn is Knife. For 3dn I have STO??D and 23ac ?U?E?LE. Can I link these four to the theme? No!