To claim his mate, he'll have to be the hero she needs A missing sister When Penelope Baptiste's twin sister goes missing, the police refuse to help her. Librarian by day...hacker by night, determined Penelope decides to take matters into her own hands. After digging a little too deep into the deep web, she ends up with more questions than answers. A growly geek Cato knows Penelope is his mate the moment finds her hacking into his computer system. Irritable and unable to think straight, he arrives at the library without a plan. Once he offers to help with her mission, the two quickly hit it off. Banter about superheroes might win her heart...but finding Penelope's twin will require Cato to reveal his own secret identity. A daring quest When Cato finally shows Penelope his dragon, the pieces of the puzzle fall into place for her. With the help of the House of Flames, Penelope finally knows where to find her sister. Cato and crew track down the vampires responsible, but can they get there in time? And even if they do, will Penelope's twin ever be the same?