Man and Wife (1870) combines the fast pace and sensational plot structure of Collins's most famous novels with a biting attack on the inequitable marriage laws in Victorian Britain. At its centre is the plight of a woman who, promised marriage by one man, comes to believe that she may inadvertently have gone through a form of marriage with his friend, as recognised by the archaic marriage laws of Scotland and Ireland. As the novel progresses, the atmosphere grows increasingly sinister when the setting moves from a country house to a London suburb and a world of confinement, plotting, and murder.