Women's magazine goes for Hitchcock film (3,4,8)
I believe the answer is:
the lady vanishes
'hitchcock film' is the definition.
(I've seen this before)
'women's magazine goes' is the wordplay.
'women's magazine' becomes 'the lady'.
'goes' becomes 'vanishes' (I am not sure about this - if you are sure you should believe this answer much more).
'thelady'+'vanishes'='THE LADY VANISHES'
'for' acts as a link.
Can you help me to learn more?
(Other definitions for the lady vanishes that I've seen before include "Hitchcock film" , "Old film" , "woman goes missing" , "Once prepared for screening" .)