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Amy and Dan Cahill continue their quest for the 39 clues, now on their way to Vienna in search of Mozart's clue. Once again, their cousins are in the hunt and after Amy and Dan. Brother and sister will have to have to use all their ingenuity to outwit their family in the hunt for the next clue.

This book made very clear to me that I am not the audience for this book. It's not my genre (over-the-top adventure) nor is it written for my age group. While I wouldn't hesitate to recommend it to a child in elementary school that was looking for a fast-paced or short read, as an adult I found it impossible to buy the premise of the books and get over the fact that Amy and Dan are on the run from social services with their au pair in Europe. ( )

Reviewed by Jennifer Rummel for TeensReadToo.com

Amy and Dan barely escaped with their lives in the French catacombs. Now, they're on their way to learn more about Mozart.

They're not alone in tracking down the 39 clues, but is someone tracking their movements?

From the train ride out of France to the escape from Venice, Amy and Dan face danger again and again. They're not above stealing clues from other Cahills, breaking into hotel rooms, distracting store clerks in order to search their store, and entering the Janus branch's secret underground hideout.

The trail for Mozart leads them through Germany, Austria, and Italy - and all countries lead them into danger. They're determined to play; after all, their life depends on finding the clues first.

A great second riveting adventure in THE 39 CLUES series will leave readers anxious for Amy and Dan while rooting for them all the way. ( )

very good book this is mainly set in europe mozart is even involved. where will it go next?
as always the competition cards are present ( )

Amy and Dan Cahill continue on in their world-wide family scavenger hunt to find the key to power and fortune. This book takes place in Vienna and Mozart's family are key figures to uncovering the next clue. This book also delves further into the Janus branch of the family tree. ( )