In 1989 someone is threatening to steal the crown jewels, so the Queen of England summons Mac B. to England to protect them--and when they are stolen from a locked dungeon cell, where Mac and Holcroft, one of the warders, are supposed to be guarding them, it is up to Mac to figure out how they were stolen, and whether the thief is the descendant of an Irish soldier-of-fortune who tried to steal them in 1671, or someone else entirely.

A young disabled girl and her brother are evacuated from London to the English countryside during World War II, where they find life to be much sweeter away from their abusive mother. "Nine-year-old Ada has never left her one-room apartment. Her mother is too humiliated by Ada's twisted foot to let her outside. So when her little brother Jamie is shipped out of London to escape the war, Ada doesn't waste a minute--she sneaks out to join him. So begins...

In 1665 London, fourteen-year-old Christopher Rowe, apprentice to an apothecary, and his best friend, Tom, try to uncover the truth behind a mysterious cult, following a trail of puzzles, codes, pranks, and danger toward an unearthly secret with the power to tear the world apart.

Ever since her near-fatal drowning, Cassidy has been able to pull back the "Veil" that separates the living from the dead and see ghosts, not that she wants to, and she was really looking forward to a ghost-free summer at the beach; however her parents are going to start filming a TV series about the world's most haunted places, starting with Edinburgh with its graveyards, castles, and restless phantoms--and Cass and her personal ghost companion,...

There is a legend that if the ravens at the Tower of London ever leave then Britain will fall, so when somebody steals the birds, the Queen calls for Mac B. to find the thief and retrieve them--a mission that takes him to Iceland, where he encounters secret submarines, hungry polar bears, and his arch-nemesis from the KGB.

After helping prepare their London home for German bombing raids, young Hettie and her brothers are sent to safety in the countryside, where she strives to keep them connected to each other and their parents.

Sara Crewe, a pupil at Miss Minchin's London school, is left in poverty when her father dies, but is later rescued by a mysterious benefactor.

Twelve-year-old Young Lady of Quality and Victorian amateur detective Myrtle Hardcastle returns, and now she is on the trail of a serial killer in her hometown of Swinburne.

When Danny accidentally buys an elephant, he accepts a job from a zookeeper to ride the elephant from Edinburgh to Manchester that turns into a journey that captures the attention of everyone in the country.

Ten-year-old orphan Mary Lennox comes to live in a lonely house on the Yorkshire moors and discovers an invalid cousin and the mysteries of a locked garden.