this is one of those 30s/40s films where the couple is separated in some way and waiting for the law to make things final. there are a few of these kinds of films, though i can only think of mr. and mrs. smith off the top of my head. my dad would probably lump them into some subgenre of the screwball comedy. in this one the wife is thought to be dead so cary grant is able to marry another woman. however a few days after the new marriage his old wife returns (she was actually stranded on an island and was finally rescued) and throws a wrench in things. irene dunne is pretty good and grant is grant. it’s not one of the best films of this era, but it’s good entertainment.