When a mature, beautiful and composed April Kyle strides into Spenser's office, the Boston PI barely hesitates before recognizing his once and future client. Now a well-established madam herself, April oversees an upscale call girl operation in Boston's Back Bay. Still looking for Spenser's approval, it takes her a moment before she can ask him, again, for his help. Her business is a success; what's more, it's an all-female enterprise. Now that some men are trying to take it away from her, she needs Spenser's help.