Operation: Red Jericho
 In 1920, the heroes of the story Rebecca and Doug McKenzie, leave Shanghai aboard their uncle's ship Expedient, intent on discovering the whereabouts of their missing parents who have disappeared while on a secret mission to the deserts of Western China. Faced with terrifying bloodthirsty pirates, submarines and deadly torpedoes, their task quickly becomes a dangerous struggle to survive. Rebecca and Doug discover the answers they seek lie in a tangle of mysterious age-old societies guarding ancient secrets, and particularly a strange and dangerous substance, known as Daughter Of The Sun, which lies at the heart of the mystery. Imprisoned on a pirate island off the China coast and facing certain death, they must find a way to escape if they are to continue their desperate quest.