Crossword Genius

Despicable people in dirty film? (4)

Ross

I believe the answer is:

scum

This clue is a double definition.

'despicable people' is the first definition.
(I've seen this before)

'dirty film?' is the second definition.
(I've seen this before)

'in' acts as a link.

(Other definitions for scum that I've seen before include "Worthless man" , "Refuse" , "Impurities that rise to surface of liquid" , "Undesirable people" , "Matter floating on 9 ac" .)

Want a hint initially instead of a full solution? Install my app