The First Time I Saw Him by L
This is the sequel to The Last Thing He Told Me, which I read when it first came out. Unfortunately, I couldn't remember a lot of the details from the first book, so I was a little lost in this one. In the first one, Hannah's husband Owen vanishes one day, leaving her to take care of her stepdaughter Bailey, who doesn't like her. This one focuses more on the relationship between Owen's first wife's (Kate) father (Nicholas) with a crime kingpin (Frank), which is putting Hannah and Bailey in danger. Then Nicholas comes up with a risky plan to keep his granddaughter and Hannah safe. I would recommend reading the first book and the second book consecutively.