The Doomsday Key

Not sure why it took me so long to finish this book as it's probably my favorite in the series so far. Rollins thankfully (and hopefully intentionally) went back to using buried treasure and occult lore to progress his story instead of deadly viruses inspired by them. I really hope this theme continues. This book also serves as a good character building book for Kowalski and Seichan. I've always dug Seichan and I hope she gets to play the spiteful hero in future books. Kowalski serves as comic relief for the most part, but he's so lovable with his shoe and teddy bear obsession that I look forward to him being a permanent part of the gang.