Dr. Tabatha Gray doesn't have a particular fondness for the dead, but the dead have a desperate affinity for her. Tabatha is a necromancer who can not only resurrect the dead, but hear the souls of the recently departed. This ability she has always considered a curse may be the only gift that can save her life and those of her friends. (saving Miss Snark is out of the question I guess)
After being shunned and banished to a boarding school by her mother, Tabatha spent years denying who and what she is before retuning home to New Orleans to face her past and start her private practice as a psychiatrist. Almost immediately she's threatened by the radical group GAPS (Guardians Against Paranormal Sinners), who want her and anyone like her dead. She joins forces with an unlikely pair of friends--a firestarter and a shapeshifter--to fight the deadly organization.
Detective Derek Bainbridge tries to ignore the instant connection he feels with this stranger and possibly dangerous necromancer, but he instinctively knows Tabatha is the only person who can help him solve a string of brutal killings that are holding the city in a grip of terror.
Family secrets, lies and treachery all combine to make Tabatha's efforts harder as she races to save the last victim.
Your hook is paragraph 1 and the reworked second half of the sentence that is paragraph 3.
You can't say "races to save the last victim" and not have me laugh out loud. When Miss Snark sees a necromancer racing toward anything she sticks her foot out to watch them go ass over teakettle.
Your first sentence is the best of the lot. Keep that. Throw out the rest. Focus. Try again.