sleeping giants, waking gods, only human

the themis files

I read sleeping giants, then listened to it (its written in an interview/first hand account pov) and just started waking gods. Def recommend so far.

In the first book, a little girl falls into a giant metal hand and the rest of the book is about who put the hand there, why it is there, and what it is for.

Anyone read all three and is the ending going to satisfy the trilogy? I hate a crappy ending.