Betrayal / by Lee Nichols.

Emma Vaile is the most powerful ghostkeeper in centuries. Which is great when she?s battling the wraith-master Neos, but terrible when she?s flirting with fellow ghostkeeper (and love interest) Bennett. When ghostkeepers fall in love, the weaker one loses all power, and that?s something Bennett is not willing to accept. Heartbroken and alone, Emma tries to lose herself in school. A new team of ghostkeepers has arrived ? one a snarky teen boy, the other a visiting scholar ? and Emma finds solace in training for the battle against Neos. But as the team grows stronger, they are threatened by an unknown force. As chilling and page-turning as Deception, this sequel will grab readers and hold them to the last page. No one is safe from suspicion as Emma closes in on the traitor. -- pub. website.