Embers by Laura Bickle

This one from Juno books looks promising. Embers by Laura Bickle:

“EMBERS

Truth burns. Unemployment, despair, anger—visible and invisible unrest feed the undercurrent of Detroit’s unease. Homes and businesses are increasingly invaded by phantoms and now, with the annual destruction of Devil’s Night approaching, a supernatural arsonist is setting blazes to summon a fiery ancient power that will leave the city in ashes. A sizzling debut from a red-hot new author.

By day, Anya Kalinczyk is an arson investigator in the Detroit Fire Department. At night—accompanied by her elemental familiar, a salamander named Sparky, and an eccentric group of ghost hunters—Anya pursues malicious spirits. The rarest form of psychic medium, a “Lantern,” Anya doesn’t allow spirits to communicate through her with the physical world like most mediums, she devours restless harmful souls and incinerates them. She’d like to get closer to Brian, a ghost-hunting techno-wiz, but a lifetime of those she loves getting hurt makes her hold back. Her two roles mesh when, on the trail of a serial firebug, she discovers an arsonist is attempting to use the fires to rouse Sirrush, a supremely powerful elemental, from the salt mine beneath the city of Detroit. Anya must capture the arsonist before Devil’s Night, when the spell will be complete and Sirrush will rise to raze the city. “