Denham, Bertie. <br/><br/>
Two thyrdes / 
Bertie Denham 
 - New York :  St. Martin's Press,  c1986 
 - 292 pages ;  22 cm. 
<br/><br/> In two interwoven mysteries, Derek, Second Viscount Thyrde, discovers evidence of a traitor at a party in 1944 and his son Derek is framed for a robbery thirty-five years later. 
<br/><br/><label>ISBN: </label>312827520 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MYSTERY FICTION
<br/><br/><label>LC Class. No.: </label>FIC .D46 1983