Invisible by Allie Harrison.
After a terrifying bank robbery brings her face to face with a masked gunman, Ellie Westfall hopes she and her son are safe. But Ellie soon learns there are worse things to fear, like dead bodies, or maybe becoming one. And as shadows close in and a bigger danger threatens, she has to trust FBI Agent Gil Trent to keep her safe from the monster bent on making her his own. But Gil Trent is hiding something. Can Ellie put her life in Gil's hands? Or will his secrets get them both killed?
This was a fantastic read with brilliant characters. I really enjoyed it.  I had my theory what gil was hiding. I liked the ending too.  5*.

Invisible had some good reviews so I wanted to read it too. It started off with a bang and for the first half of the book it kept my interest. However, it jumped into the romance way to fast for my liking. (Like on day two or three of the characters meeting)
The female character had a back bone however, she wavered on her intuition and that was a bit phony for me as well.
I don't want to discourage anyone from reading this book because it was a descent read just not what I thought it was going to be by reading the blurb about it as well as the cover.