Spenser, a Boston private eye, agrees to help a former client, a young prostitute who is now a well-established madam, discover who is trying to blackmail her and uncovers connections with local kingpin Tony Marcus.
When Rachel Wallace, a young woman with a lot of enemies, disappears, the man who was supposed to be protecting her lays his own life on the line to track her down.
Spenser's client, Harvey Shepard, has lost his pretty wife and a loan shark has put the bite on him. Now suddenly Spenser is in so deep that the only way out is a plan so risky, it makes dying look like a sure thing.