Profound part of homicide episode (4)
I believe the answer is:
deep
'profound' is the definition.
(synonyms)
'part of homicide episode' is the wordplay.
'part of' indicates a hidden word.
'DEEP' can be found hidden inside 'homicide episode'.
(Other definitions for deep that I've seen before include "hard to follow" , "(Of sound) low in pitch" , "Extending far down" , "dangerous for swimming?" , "Cavernous" .)