One day Jane is staring at one elegant home while walking a dog and Eddie Rochester careens out of his driveway, almost running Jane down. Eddie is newly widowed, very handsome and fit. Her invites Jane inside for coffee and apologizes for almost killing her. This is the start of the Eddie and Jane storyline.
The very title called The Wife Upstairs is a bit of a spoiler and that crazy scenario is revealed early in the book.
I was interested in this book because a Jane Eyre comparison was mentioned. It's not a ripoff story but you'll see a nod to the names and some of the relationships. Jane, Rochester, Bertha plus the poor character of Jane who had a horrid upbringing.
This story has mystery, two big twists in the narrative (be patient and wait for it!) and a warning to those who are offended by the F-bomb. It's not used as much as in The Big Lebowski but you've been forewarned :-) Doesn't bother me and was, in my opinion, approprite for the scenarios.