E ARC provided by Netgalley Zeyna's parents have come from Pakistan and are living in London in the 1970s. She loves taking judo lessons and secret horseback riding ones (she cleans the stables in exchange for the lessons, since her mother thinks they are too dangerous), and likes hanging out with her friends Mark and Robbie. When the news that the British Museum is negotiating to return the Shirin Jewel, a Ruby, to Iran, Zeyna starts to notice strange things in her neighborhood. She sees a man with a knife who drops a piece of paper with her street on it, and later someone breaks into the family's shed. Her parents are acting odd, as well, and suddenly decide to go to Bahawalpur for a cousin's wedding. When they arrive, Zeyna sees a man give her father a matchbox, and later finds a ruby in her mother's luggage. She and her sister Amina take it to a jeweler, where they find it is fake, but when detectives come looking for her parents, she and Amina must figure out what their connection to the jewel is, leading to exciting and dangerous adventures. Strengths: This starts with a map of the Hippie Trail, which Zeyna and Amina follow during their adventures. I'm enthralled, and rather want to take a deep dive into so many aspects of the trail! There should be more historical fiction set in the 1970s. This had the feel of an international Harriet the Spy in some ways, and was a good adventure with a side of exploration of culture and belonging. Weaknesses: Zeyna seemed rather young to successfully have as many adventures as she did. Something about the tone of this made me think that she was only imagining that her parents were involved. What I really think: This is a good choice for readers who like adventures to retrieve missing loved ones like Dasgupta's The Serpent's Secret or Eagle's equally British The Pear Affair.