McCrary, Gregg O <br/><br/>
The unknown darkness: profiling the predators among us 
Gregg O McCrary and Katherine M Ramsland 
 - New York  HarperTorch  2004 
 - 390 p. : ill. ; 18 cm 
<br/><br/><label>ISBN: </label>9780060509583 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Criminal behavior, Prediction of<br/>Criminal investigation -- Psychological aspects<br/>Serial murders -- Case studies
<br/><br/><label>Dewey Class. No.: </label>363.2595 MCC