I've posted about this in the past...... I know of a family, very close to me, who from all outward appearances, have everything you could wish for; beautiful home, children at university, prestige cars and their own businesses, they want for nothing. But several times a year, the woman beats her husband up so badly that he's hospitalised. Despite being repeatedly urged to leave her, or seek help, he won't. He feels that to do so would make him a laughing stock or he would lose his credibility in the business community, or it would embarrass the children if anyone knew. I have seen his injuries and they were shocking. One day, she will either hurt him so badly he will be disfigured for life or she'll kill him.
From the outside, you'd never guess that this was going on.