1N-COUNT 歹徒;恶棍;流氓 A villain is someone who deliberately harms other people or breaks the law in order to get what he or she wants. 歹徒;恶棍;流氓
2N-COUNT (小说、电影或戏剧中的)主要反面人物,反派主角 The villain in a novel, film, or play is the main bad character. (小说、电影或戏剧中的)主要反面人物,反派主角
3PHRASE [villain inflects]元凶;祸首;为害的人 If you say that someone is the villain of the piece, you are saying in a slightly humorous way that they are seen by some people as the cause of all the trouble in a particular situation. 元凶;祸首;为害的人
If Mr Denny is indeed the villain of the piece, as the police claim he is, he should have been more carefully watched.