The Firm wants her dead, but can Alex do his duty and kill the woman he thought was the love of his life? Alex Martinez is a soldier who lives in the shadows, protecting his country. Despite doing a job he enjoys, Alex has never forgotten the first and only woman he's ever loved. The woman he proposed to at eighteen—whose disappearance changed the course of his life. Evelyn Garcia’s dreams were ripped away from her one dark, Cuban night when she witnessed a crime that made her run from the man she loved. Fighting against the horrors she witnessed, she became the feared and deadly assassin known as, Siren. Using seduction, she exacts revenge on men who hurt the innocent. No matter how many lives she saves, she can’t forget the one man her heart belongs to. In order to keep him safe, she must hide her existence. When Alex comes face to face with Evelyn again, he witnesses her killing a man. Seeing her alive, and unable to accept her betrayal, Alex vows to have nothing to do with Siren. Until Alex is handed a new contract. Siren is considered a traitor to the firm. She has a kill order on her that he must carry out. Can Alex overcome his anger and feelings of betrayal and save Siren, or will he follow orders and terminate her? Enemies-to-lovers romance that will have you falling in love. Can be read as a standalone.