The Ruby Redfort Series
by Lauren Child (Author)
Ruby gets into lots of scrapes with evil villains, like being trapped in a giant hourglass or held over a flaming volcano, but she's always ice-cool in a crisis. Just take a classic screwball comedy, add heaps of breathtaking action, and multiply it by Lauren Child's writing genius, and what have you got? Only the most exciting middle-grade series since, like, ever.