This is the first novella in the Adventures of Mycroft Holmes series
Mycroft’s life is perfect, except for one small coded message he can’t quite crack, but this doesn’t bother him. His brother, Sherlock, has always helped out when tasks require more effort than he’d like. He’d never thought life dull, until he found Amelia.
In this novella, a man of extraordinary intelligence finds himself puzzled by someone he knows is inferior. While preventing a terrorist attack he will need all his experience to keep her alive.