Waiting on Wednesday: The Demonists

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This week I'm waiting on The Demonist by Thomas E Sniegoski

Here's the summary taken from goodreads:

From the New York Times bestselling author of the Fallen series and the Remy Chandler series, a new dark fantasy series filled with demons, exorcisms, and the fight against the worst that hell has to offer...
There is more to our world than meets the eye—darker things, crueler things. Exorcist John Fogg and his wife, psychic medium Theodora Knight, know what lurks in the shadows. But even they’re not prepared for the worst Hell has to offer...
It was supposed to be a simple exorcism, a publicity stunt to firmly establish John and Theodora’s thriving paranormal investigation empire in the public eye. But something went wrong, leading to an on-air massacre that unleashed a malicious host of demons and left Theodora catatonic, possessed by countless spirits.
John sets out on a desperate quest to find a cure for his wife, but his obsession brings him face-to-face with an even more terrifying problem: Theodora’s possession is only one piece of a deadly plot that is threatening the entire world. Because an ancient evil is about to make Earth its battlefield—and without John and Theodora’s intervention, there is no chance for salvation...

Why I'm Waiting

I've heard good things about the author, and the description sounds really, really interesting.

This one comes out April 5th, 2016