Robert B. Parker's payback
(Book)

"PI Sunny Randall has often relied on the help of her best friend Spike in times of need. When Spike's restaurant is taken over under a predatory loan agreement, Sunny has a chance to return the favor. She begins digging into the life of the hedge fund manager who screwed Spike over--surely a guy that smarmy has a skeleton or two in his closet--and soon finds this new enemy may have the backing of even badder criminals. At the same time, Sunny's cop contact Lee Farrell asks her to intervene with his niece, a college student who reported being the victim of a crime but seems to know more than she's telling police. As the uncooperative young woman becomes outright hostile, Sunny runs up against a wall that she's only more determined to scale. Then, what appear to be two disparate cases are united by a common factor, and the picture becomes even more muddled. But one thing is clear: Sunny has been poking a hornet's nest from two sides, and all hell is about to break loose." -- Amazon.