MYCROFT (2016)

"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?"

"Mycroft hits the USA in search of the Apocalypse Handbook - but an encounter at the New York docks leaves him battered and bruised at the hands of impossible superweapons. And that's before he even follows the trail out West, where an unexpected face boards his train, with robbery on his mind! And introducing... Lark Adler!"