Curses & Cold Brew by Ali K. Mulford

A witch makes a deal with an irresistible demon, but when souls start to go missing, all Hell breaks loose . . .

Maple Hollow is known for its endless October charm, gossiping ghosts, and pumpkin spice everything. Not the sort of town you’d imagine a designer suit-wearing demon to call home. But when Ramona Henry’s souls start to go missing, she sets out to find the thief, and that means reluctantly calling in the help of a certain apothecary witch who bears her mark.
Iris Stonewood is more than Maple Hollow’s most flirtatious witch—she’s also a thrill-seeking thorn in Ramona’s side. Bored of being the third wheel to her two best friends, Iris decides she’s going to be the Watson to Ramona’s Sherlock. Their banter is sharper than a vampire’s grin–and twice as deadly.
Now that souls are vanishing faster than candy on Halloween night, will Iris and Ramona be able to catch the culprit before it turns its ghoulish gaze on Iris?
Everyone’s a suspect, from the broomstick busybodies to the vampire knitting club. With the mystery unfolding, Iris and Ramona hunt through the shadows to unmask the villain while trying to ignore their sizzling chemistry that burns hotter than a Halloween bonfire.