Honour tourist that's caught male killer (4,3,6)
I believe the answer is:
jack the ripper
'killer' is the definition.
(I have seen 'serial killer' mean 'jack the ripper' so perhaps 'killer' could also mean 'jack the ripper')
'honour tourist that's caught male' is the wordplay.
'honour' becomes 'jack' (**).
'tourist' becomes 'tripper' (tripper is a kind of tourist).
'that's caught' indicates putting letters inside.
'male' becomes 'he'.
'tripper' placed around 'he' is 'theripper'.
'jack'+'theripper'='JACK THE RIPPER'
(Other definitions for jack the ripper that I've seen before include "Victorian serial killer" , "Victorian murderer" , "Murderous character" , "Notorious murderer" , "Man with murderous intent" .)