SECRET AGENT X 12/36 Author:Various Authors SECRET AGENT "X" - 12/36 - A direct descendant and competitor to the original super sleuth...The Shadow...Secret Agent X was unknown to everyone but himself. Written by a plethora of authors under a single "house" name used to hide the various authors. CITY OF MADNESS by Brant House All Agent X's plans to save millions of lives fell to p... more »ieces when his most important confederate, Harvey Bates, rebelled against X's, orders. For Bates insisted that the dangerous Charlotta, glamorous spy of war days, was incapable of evil.« less