Malik Nassir and Iosefa Malvia are members of the Order of the Phoenix, an international cadre of shifters headquartered in a former military academy known as the Citadel. Charged with protecting the first fated mate of their brothers, the two become smitten with her roommate and best friend. Casey Andersson is an ATF Special Agent who leads a double life. When Malik and Iosefa discover her secret—Casey is a submissive and a member of an exclusive club—they’re determined to learn how to master her. Trouble is, she’s already being dominated by Master S (aka Ivan Michalov). They don’t know that Russian Dominant has a secret agenda to claim Casey and keep her. Promising to help find her brother’s killer, Ivan leads her on a dangerous path into the heart of a deadly organization. Can Malik and Iosefa save her from the dark fate that’s already been written out for her or will they be too late? This second standalone book in the Guarded Hearts Series is a darker PNR shifter romance with potential triggers. MFM mènage written for Ages 18+.