Lucy Kline, Necromancer by Tom O'donnell

For fans of Buffy the Vampire Slayer and highly bingeable thrillers, Lucy Kline, Necromancer, is a Nancy Drew-style murder mystery mixed with the occult.

It’s been two years since Lucy’s twin sister was presumed dead. As the only person who knew about Louisa’s plan to sneak out on the night she was killed, Lucy still feels responsible for her sister’s grim fate—despite the fact that it was Lucy who eventually cracked the case, putting Louisa’s killer in jail.

Or so she thought.

When another girl who looks just like Louisa goes missing under similarly mysterious circumstances, and ghostly dreams begin to plague Lucy, she throws herself back into the investigation. The more clues she uncovers, the more her nightmares bleed into reality. And signs start to point to the impossible: necromancy.

With the help of her classmate Howie and a retired medieval history professor, Lucy must find the culprit behind these disappearances and finally come to terms with the grief that’s haunted her for years.