Choose your partner wisely

I have a friend a guy from middle east (22 years old) who knew a local woman 37 years old (a widow with one daughter 5 years old) online for 2 years then they committed to get married. The guy traveled with all documents to marry her.
After 2 months of marriage his wife told him that she cheated him and it was because her child told him when she was not there, the child is always afraid of her. This guy did not have choice but to accept it, he could not go back to his own country. From that time his wife showed her real character, she is a monster. His wife abused him. He found out she even ever tried to kill her own brother. This guy could not work or open a bank account, this is the rule for spouse visa. He started not to be comfortable to stay with his wife but cannot run, he did not have any friends. He tried to make friends but because he is good looking women like him, so he started to be as playboy, while his wife also had several boyfriends. One day he met a woman and he was so depressed this woman took him to stay together, the last 6 months he lived separately with his wife. His wife several times brings different men to live in her flat with her and her daughter. He told that his wife would make him into jail, she always threatened him, he also becomes a liar. He sometimes met his wife and he kept secret about the woman he lived with. They would get divorce soon as his wife already had a man that contact him to marry her. It is almost 2 years of their marriage.
Last week, his wife asked him to come to her flat to return her travel bag and exchange their laptops. This guy did not have any feelings so he went to meet her. Actually it was a trap, she made a report and polices took him from her flat to the police office nearby.
She found the phone number of the lady he stayed with and started to threaten and terror her. She would make another report to put this lady in jail too if she heard she interfered the case. She said his husband was a suspect molested her daughter.
As friends, we would look for him as he could not be contacted for 2 days, so we called this police office and found out he was there and the case is not about molest a child under age, but hit a child. Well we know he would not harm any kids. One of our friends tried to make appointment to meet him and pretended as his fiancé, cos this time only family can visit him. His wife knows and terrors again thinks that the lady sends someone to visit him. Of course this lady denied. Poor guy, he lives alone here, no family and the strange is police did not give him a chance to contact his family in his country or his close friends, he does not either have a lawyer.