Not sure if any of these are repeats, but 7 free Carina Press titles for signing up for their newsletter.
- Exclusively Yours by Shannon Stacey
- Fatal Affair by Marie Force
- No Such Thing by A.M. Arthur
- Going Under by Jeffe Kennedy
- No Money Down by Julie Moffett
- Goddess with a Blade by Lauren Dane
- Monster in My Closet by R.I. Naquin
Not sure if they are all part of series, but most seem to be.
Exclusively Yours is the first book in Stacey's Kowalski series. The two secondary couples in it are among my favorites from the series. It was originally written as a stand alone and can easily work as such.
http://bookpages.harlequin.com/carina/