Hello Ixion - I'll try to give you hints, shall I?
15 ac. There is a part of the brain called Pons - you'll find what you need in Chambners.
19 ac. What you really want is "from that" begins th
29 ac.How would a drunkard say "sandy" - yellowish?
This is an anagram - spymaster "M", and settles
If this doesn't help, ask again .