A seven-book series that stars a dynamic 14-year-old who travels with her widower father to various countries on missions trips. Accompanied by her crotchety tutor who tries to rein her in, often meeting up with another missionary family which gives her opportunity to conspire with her best friend and depending heavily on the wisdom of a strong mother figure in her life, Lydia Barnes gets herself onto–and eventually out of–wild adventures that open up world issues to her, challenge her faith and ultimately change the world.

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