LEGO toys -- Juvenile literature. Ninja -- Juvenile literature. LEGO toys -- Juvenile fiction. Ninja -- Juvenile fiction. Good and evil -- Juvenile fiction.

Secret societies -- Juvenile fiction. Assassins -- Juvenile fiction. Memory -- Juvenile fiction. Quests (Expeditions) -- Juvenile fiction. Adventure stories.

Mental illness -- Juvenile fiction. Magic -- Juvenile fiction. False imprisonment -- Juvenile fiction. Mental illness -- Fiction. Magic -- Fiction.

Knights and knighthood -- Juvenile fiction. Monsters -- Juvenile fiction. LEGO toys -- Juvenile fiction. Knights and knighthood -- Fiction. Monsters -- Fiction.

Cyborgs -- Juvenile fiction. Stepfamilies -- Juvenile fiction. Social classes -- Juvenile fiction. Extraterrestrial beings -- Juvenile fiction. Science fiction.

Time travel -- Juvenile fiction. Good and evil -- Juvenile fiction Space and time -- Juvenile fiction. Brothers and sisters -- Juvenile fiction. Science fiction.