Garment of shadows

In a strange room in Morocco, Mary Russell is trying to solve the mystery of who she is. She has awakened to find blood and soldiers pounding on the door. She finds she is clothed like a man and armed only with her wits and a scrap of paper containing a mysterious Arabic phrase. As she flees to the streets she finds herself strangely adept in the skills of the underworld. Meanwhile, in the ancient city of Fez, Sherlock Holmes finds himself pulled into the growing war between France, Spain, and the Rif Revolt, which is led by a man who may be a Robin Hood or a power-mad tribesman. As Holmes searches for Mary, and Mary searches for herself, each tries to crack deadly parallel puzzles before it's too late.