The Shadowed Chapter. Crimson Falls Magical Mysteries, #1

They're seventy-eight, best friends, and absolutely not qualified to solve murders. Frankie Harper runs the Whispering Pages Library in the peculiar town of Crimson Falls, where books talk, vampires argue about Proust, and magic is just another part of daily life. She's methodical, proper, and has everything organized exactly how she likes it. Jude Pemberton is her opposite in every way-impulsive, chaotic, and dying for some retirement excitement.
When she dubs herself "Chief Investigative Assistant, " Frankie knows trouble is coming. Then the trouble arrives: a murdered witch, a stolen grimoire, and a shadow-stealing killer with only 72 hours until their dark ritual is complete. Suddenly Frankie and Jude are racing against time, interrogating supernatural suspects, and decoding clues from sentient books. They're banned from crime scenes, threatened by vampires, and guided by a cat who definitely knows more than he should.
They might be septuagenarians, but they're smart, determined, and they've got seven decades of friendship powering them forward. The killer better watch out. These two are just getting started.