Linker - The Pursuit of Lucena Burning
This is the the third book in the Lucena's Fire series. Lucena is a serial killer loose in Florida, and occasionally elsewhere. She changes her identity often to avoid detetion. Her killings are all justified, in her mind, since they are either men who had abused her or were socially unacceptable in all respects. In this book, Ed Davies, a detective, develops an obsession with catching her.