First published in 1922, &quot;The Secret Adversary&quot; is Agatha Christie&#39;s second detective fiction novel.<br /><br />Hiring themselves out as &ldquo;young adventurers willing to do anything&rdquo; is a smart move for Tommy and Tuppence. All Tuppence has to do is take an all-expenses-paid trip to Paris and pose as someone named Jane Finn. But with the job comes a threat to her life, and the disappearance of her mysterious employer. Now Tuppence&rsquo;s newest job is playing detective&mdash;because if there&rsquo;s a Jane Finn that really exists, she&rsquo;s got a secret that&rsquo;s putting both their lives in danger.