After her sister vanishes before the wedding, wealthy Rachel Moon is sent to wed Patrick Nightwood, a feared pack leader blamed for his former mate's death. Caught in a bargain with only thirty days to survive a deadly poison, she endures betrayal, abduction, jealous enemies, and the return of Patrick's supposedly deceased former love. Yet beneath his merciless reputation, Rachel finds a man capable of devotion, and together they must expose the truth before their growing bond is destroyed.