When George Mack is chosen to speak at a scientific symposium, there's a bonus for Alex, Annie, and Ray: a trip to Paris! This trip should be a vacation -- no one will be looking for the GC-161 kid here -- but Alex can't shake the feeling that something weird is going on. Someone is using George to transport a priceless stolen painting without his knowing! But how to prove it? Although Annie and Ray think she's cracked, Alex trusts her instincts. A little morphing here, a little sleuthing there, and she's got the pieces of a very interesting puzzle. But can she put it all together before her dad is arrested...or worse?