The most common and most likely answer to this crossword clue is the 8 letter word STALKERS
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More clues leading to the result STALKERS
Buddy explains!

The straight part
We know that "Wrongdoers" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case wrongdoers = stalkers.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does STALKERS mean?
STALKERS noun- A person who engages in stalking, i.e. quietly approaching animals to be hunted; a tracker or guide in hunting game.
- A person who secretly follows someone, sometimes with unlawful intentions.
- Any of various devices for removing the stalk from plants during harvesting.
- Any bird that walks with a stalking motion.
- A kind of fishing net.