Derry, Paul, <br/><br/>
Inside a police informant's mind / 
Paul Derry. 
 - xxii, 152 pages :  illustrations ;  23 cm. 
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>1498715354 9781498715355  RM159.50 
<br/><br/><label>Subjects--Personal Names: </label><br/>Derry, Paul. author. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Informers--Canada--Biography.<br/>Informers--Psychology.<br/>Informers--Legal status, laws, etc.--Canada.<br/>Witnesses--Protection--Canada.<br/>Undercover operations--Canada.