Caught in homicide, ran sneakily up (8)
I believe the answer is:
ensnared
'caught' is the definition.
(ensnaring is a kind of catching)
'in homicide ran sneakily up' is the wordplay.
'in' indicates a hidden word.
'up' shows that the letters should be reversed in order (in down clue: letters go upwards).
'deransne' is hidden within 'homicide ran sneakily'.
'deransne' in reverse letter order is 'ENSNARED'.
(Other definitions for ensnared that I've seen before include "Caught in a trap" , "Trapped" .)