In Scotland in the 1930s, fifteen-year-old Sophie, her friend Mikael, and her great-aunt Tabitha are caught up in a murder mystery involving terrorists and suicide-bombers whose plans have world-shaping consequences.

Fifteen-year-old Julia Beaufort-Stuart wakes up in a hospital not knowing how she was injured, and soon befriends Euan McEwen, the Scottish Traveller boy who found her, and later, when a body is discovered, she experiences the prejudices his family has endured and tries to keep them from being framed for the crime.

Told in multiple voices, fifteen-year-old Jamaican Louisa Adair uncovers an Enigma machine in the small Scottish village where she cares for an elderly German woman, and helps solve a puzzle that could turn the tide of World War II. A German soldier risks his life to drop off the sought-after Enigma Machine to British Intelligence, hiding it in a pub in a small town in northeast Scotland. Louisa Adair, a teen girl hired to look after the pub owner's...