Revenge al Dente

Celia Brockwell writes the truth and takes no prisoners. She's exposed predators, dogged charlatans, and even told the story of an infamous serial killer. It's how she has made her career. Going after the brutal facts is how she's made her career.
However, sometimes her matter-of-fact approach makes enemies. So when her friend is kidnapped, it doesn't surprise Celia that the kidnapper contacts her.
So who is this mysterious criminal? Is it her old boss, who is fresh out of prison and resentful? Is it a professional rival? Or is it someone who wants something only Celia can provide?