The movie I am looking for is from the 80’s. A women’s two children (son and daughter) are kidnapped by her ex-husband, that she thought was dead, while playing on their swing in the yard (mom is in the shower).
She had two children with the ex that he killed and she was accused of the crime. Some people think that she killed the two that are missing now.
The ex has them in a large house, that one of the women’s friends have rented to him.
She finds the children after her friend gives her a glove that her daughter was wearing the morning she went missing. They fight on a catwalk at the house, at the end of the movie and he falls to his death.
In color, set in New England I think.