I'm so sad that I'm nearing the end of this series!

Summary:
In this volume, we are shown a lot of the past. First, we learn about a group of minutemen who are trapped deep in the cave during the Revolutionary War. In the cave, the black door is open and a young Ben Locke must to find a way to close it. We also really get to know Rendell Locke (the Locke siblings father), Erin Voss, Kim Topher, Ellie Whedon, Mark Cho, and Luke "Dodge" Caravaggio when they were all teenagers and enjoyed messing around with the keys. One day, the group makes a very poor decision, which changed their path forever.

In present time, Tyler and Kinsey use a key that allows them to travel through time so they can learn more about the keys.


My thoughts:
This volume is another really great collection! My review here is going to be pretty short because I don't want to spoil anything.

I will say that I loved that this collection was mainly focused in the past so I could get answers to a lot of questions that I have been mulling over. I also really enjoyed learning more about the history of the keys and how they were used during different times.

Getting to know Rendell Locke, Luke "Dodge" Caravaggio, and the crew was really interesting! I loved that we were given the chance to read more about them. It added even more depth to this already amazing story!