"The Hollows," or Rachel Morgan, are detective/mystery novels in an urban fantasy alternate history setting by Kim Harrison take place primarily in the city of Cincinnati and a nearby enclave on the opposite side of the Ohio River nicknamed "The Hollows". The books are told in the first-person point-of-view of Rachel Morgan, a detective witch who works with local law enforcement agencies and faces threats both mundane and supernatural in origin.
9.0 Pale Demon by Kim Harrison Condemned and shunned for black magic, Rachel Morgan has three days to get to the annual witches? conference and clear her name, or be trapped in the demonic ever-after . . . forever after.