(a summary from another reviewer....copied because she said it very well and briefly..thanks Jessica)
It’s a romp through Prohibition-era Manhattan, where flapper Geneva (Gin) Kelly has landed after running away from her abusive stepfather in rural Western Maryland. She gets caught up in a sweep of the speakeasy next to her apartment and the dashing agent, Oliver Anson, persuades her to help him take down her stepfather, who has since become one of the country’s most notorious—and dangerous—bootleggers. Twists and turns abound in her storyline, but meanwhile, in 1998, Ella Hawthorne moves into that same apartment building after leaving her cheating husband. Intrigued by rumors of ghosts in the former speakeasy next door and the handsome fix-it-man upstairs, Ella is looking for the inspiration she needs to start a new life.

having said all the above..I really couldn't give it the five stars everyone else did. I've only read one other book by this author: The Secret Life of Violet Grant - and loved it. So i can't speak to the fact that there were recurrent characters in this book from others. Maybe that made a difference. Also the fact that others KNEW this was the first in a new series -- not sure how they know this -- there was nothing in the beginning or end of the copy of the book I had that alluded to this. Which made me very disappointed in the end that many of the threads were not pulled together. I loved reading it until the end.