Do turn into Headless Man? (7)
I believe the answer is:
swindle
'do' is the definition.
(I've seen this before)
'turn into headless man?' is the wordplay.
'turn' becomes 'wind' (I've seen this in another clue).
'into' means one lot of letters goes inside another.
'headless man?' becomes 'sle' (I can't explain this - if you can you should believe this answer much more).
'wind' placed inside 'sle' is 'SWINDLE'.
Can you help me to learn more?
(Other definitions for swindle that I've seen before include "Fraudulent action" , "skin" , "Diddle, sting, twist" , "Fraudulent scheme" , "Trick" .)