His victims got it in the neck (4)
I believe the answer is:
thug
'his victims got it' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'the neck' is the wordplay.
'the' becomes 't' (the is pronounced as a 't' sound in some dialects).
'neck' becomes 'hug' (I am not sure about this - if you are sure you should believe this answer much more).
't'+'hug'='THUG'
'in' is the link.
Can you help me to learn more?
(Other definitions for thug that I've seen before include "Gorilla" , "Burrowing crustacean" , "Violent criminal" , "Violent hoodlum" , "brute" .)