Ugh. Wow, this was poor. Not only did it take forever (1/4 of the book!!), for the person with the relevant information to become unavailable, it took almost 1/3 to finally get the scavenger hunt going. Which was over about 50 pages later (ok, maybe 100 pages. I read the audio, I don't know). Why bother?

The plot twists were quite foreseeable, too. And what kind of justification is "he would have had trouble typing an umlaut into his phone". Have you ever seen a phone? You can have multiple keyboards and even multiple letters per button. It's like magic.

It's sad, I really enjoyed the early books. This one feels like "maybe I can trick those readers into buying one last book."