Dream girl - Robert B. Parker

When a mature, beautiful April Kyle - a well-established madam overseeing an upscale call girl operation in Boston's Back Bay - walks into Spenser's office, the PI barely hesitates before recognising his once and future client. Still looking for his approval, it takes her a while before she can ask, again, for his help. Her business, an all-female enterprise, is a success. And some men are trying to take it away from her. Connected men. Spenser, playing saviour, finds that April is not just not as innocent as she seems - she may be her own worst enemy.