Read a review of Her Russian Returns by Red Phoenix.
You should read this book if you have already started the series of Brie's Submission and are interested in the BDSM theme.
Rytsar has found himself in a cold dark dungeon that he is not the master of. Starving, broken and near death an unlikely furry friend finds him and helps him hold on a little longer, until someone of the human persuasion can come set them both free.
Now healing back on the state's with Thane and Brie, Rytsar is determined to prove his honor, worth and loyalty.