MYCROFT HOLMES: THE APOCALYPSE HANDBOOK #4

In search of the purloined Apocalypse Handbook, Mycroft Holmes and Lark Adler criss-cross the United States, facing danger and intrigue at every turn. But what does the latest heist of Jesse James and his band of outlaws have to do with their quest? What secrets is Lark hiding in her past? And what traumas and triumphs have shaped Mycroft into the man he is today?