By the Horns — Rachael Slate

Enter a secret guild of assassins... As a member of the Lotus League, Natalie Quan is as lethal as she is invisible. Her newest mission brings her to Malaysia, and straight into the arms of the man she relinquished to her past. The only man who has ever seen through her outward facade to her soul. And the one who stands between her and her goal of hosting one of the twelve spirit animals of the Chinese Zodiac-the Snake. To keep the Snake and finally defeat the demon of her past, she'll have to slip into one more disguise. Some masks never hide the truth... The last person Kassian Weld, Chosen of the Ox, expects to be named their newest member is Natalie. Years ago, she disappeared without a word. Now, she's back with a sexy air of confidence, tempting him to end his pledge of celibacy. Despite her claims of being a capable assassin, no way in hell will Kassian allow Natalie to host the Snake-a volatile spirit. Yet, Natalie is as driven to succeed as Kassian is determined to ensure she fails. The vows that brought them together threaten to tear them apart... Natalie is bound to the Lotus League, Kassian is devoted to his oaths, and they are both sworn to their fates as Chosen. The forbidden spark of desire reigniting between them threatens to consume their destinies. But when Kassian unmasks Natalie's darkest secret, they'll risk every vow they've taken for one chance to seize passion together...by the horns."