While good, this was an interesting departure from the plotlines we've come to expect from the series. With no definite clue to trace, Amy and Dan head to Australia on a whim. There they meet up with their father's best friend. Shep is a bush pilot who seems to know everyone and everything, and is more than willing to house Amy, Dan, and Nellie for a few days. Soon enough though, the Kabras, Holts, and Irina are hot on Amy and Dan's trail.

Before they know the siblings are being threatened at every turn. They finally catch a break when they stumble onto the story of Bob Troppo, Amelia Earhardt and how their parents are connected. Add then to top it all of, they discover that their parents were murdered and that the same people who were killed them are after Amy and Dan.

Full of the adventure and mystery we've come to expect, this was quite a good read! Also, the idea of Amy and Dan's having to solve personal mysteries, and only a slight idea about the next clue, was also a refreshing departure from the systematic plots thus far.

I'm really looking forward to the next one... especially since the last page in this book states that the clan that Amy and Dan belong to will be revealed in the next book. I'm actually putting my money on the Madrigals (a few hints about this mysterious group are given in "In Too Deep"...). Anyone else care to differ?