The Freelancers Series by Lee Isserow

It's not a nightmare if you're awake... Ana's grandmother has died in a horrific fashion. Soon, she finds herself under assault by the same supernatural forces. With nowhere else to turn to, Rafe, a low-level magical detective comes to her aid. He's been tracking the creature, and the box that appears to draw it forth. Together, they set out to put an end to the malevolent fiend once and for all. But all is not as it seems with the entity that's hunting Ana down... moreIt's not a nightmare if you're awake... Ana's grandmother has died in a horrific fashion. Soon, she finds herself under assault by the same supernatural forces. With nowhere else to turn to, Rafe, a low-level magical detective comes to her aid. He's been tracking the creature, and the box that appears to draw it forth. Together, they set out to put an end to the malevolent fiend once and for all. But all is not as it seems with the entity that's hunting Ana down. Nor is all as it seems with Rafe, or Ana for that matter. Everyone has secrets, and some secrets are powerful enough to kill. less

How do you fight something that knows you better than you know yourself? A plague is spreading. It writes on skin, bringing the innermost thoughts of its victim to the surface. Until there is no more skin to write on. Then... it brings death. Ana and Rafe are completely unaware of the plague, caught up in case after case. Until someone they're close to is infected. Soon, it's a race against the clock to save them - and there's only one way to stop the spread. To pass it on...

Something has been biding its time, waiting for its inevitable release. As Rafe and Ana's relationship progresses to the next level, it is let loose, and will wreak vengeance upon the lands. And soon, it shall lay down judgement on the two of them. And the scales are balanced in its favour... Rafe's secrets will finally be out, and he will have to confess everything in the hope Ana will forgive him. Because if it rules against them, it's not only their love that will pay the price.. moreSomething has been biding its time, waiting for its inevitable release. As Rafe and Ana's relationship progresses to the next level, it is let loose, and will wreak vengeance upon the lands. And soon, it shall lay down judgement on the two of them. And the scales are balanced in its favour... Rafe's secrets will finally be out, and he will have to confess everything in the hope Ana will forgive him. Because if it rules against them, it's not only their love that will pay the price... Ana's life will be forfeit. less