Robert B. Parker <br/><br/>
The Professional 

 -  Berkley 
 - 352 pages 
<br/><br/> The wives of Boston's wealthiest men have a mutual secret: they all had an affair with the same cad who's blackmailing them, and Spenser's been hired to stop him. But when the wives start dying one by one, Spenser's new case becomes murder. 
<br/><br/><label>ISBN: </label>9780425236307 
<br/><br/><label>Standard No.: </label>515458130 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mystery
<br/><br/><label>LC Class. No.: </label>PS3566.A686 
<br/><br/><label>Dewey Class. No.: </label>813.54