The Bone Man by L.L. Frost

Demons are vanishing from the Bone Yard, and the streets tremble with the threat of ancient forces awoken.
Life in Clearhelm has changed since the new mayor took office, putting a halt to the work the Cleaners do for the Joint Task Force of Paranormal Investigations. With no other choice, Pen is forced to return to work as a mercenary, but cases are slim after turning away so many clients.

When a woman comes to her office begging them to find her missing husband, The Cleaners take on the job, their destination the Bone Yard. But what should have been a simple missing person’s case gets tangled when the city council assigns them a quest of their own, one that could get them all killed.