Joshuas Trumpet Lilli's dad, JC Mitchell, has arranged for both Lilli and Zane to come to Jerusalem to visit him while he is on an archaeological dig near Solomon's Temple. Knowing that the Temple once held gold and treasures, Teddy feels cheated because he does not get to go. Zane enlists Teddy as their backup tech and Teddy agrees. Lilli tells Zane that once they are in Jerusalem, she wants to slip away to go to Jericho, the place her mother visited the night before she disappeared. Lilli is hoping to find clues to her mother's disappearance. Zane fears they will find evidence that her mother was murdered–but by whom? And why? JC Mitchell's nemesis, Tristan St. Clair wants the fabled Joshua's horn that brought down the walls of Jericho which Lilli's mother found just before her disappearance. Lilli coerces Zane into going to Jericho. Their dangerous escapade reveals more unanswered questions and mysteries to solve.
