This is part of a duology that also features A Lady becomes a Governess and they work well together well (though I'd say you could read either story and be satisfied) I would recommend that if you're reading both that you read this one second.

Claire Tilson is on a ferry from Dublin to England when she meets another woman who looks identical to her. They swap clothes to see if anyone will notice and they discover that the person dressed as the governess is invisible. They continue talking through the night and then the ship is shipwrecked. Claire is knocked on the head and when they arrive several weeks later on a fishing vessel that rescues them (how her reputation wasn't completely ruined I'll never know but I went with the flow) and she has amnesia, everyone believes she's Lady Rebecca based on how she's dressed.

Now she has a marriage she's supposed to enter into with a man who doesn't attract her and Captain Lucien Roper - her rescuer - is attractive but he hates the aristocracy. I enjoyed the read and the characters were entertaining. ( )