In Chapter 4, Lukas discovers a strange grid of letters in the book he found in Logan's room.

A F E F T S N O K G
O Y O A A I P E I L
I R K Y X N E S D E
G E T H A P T T Y E
U H E D I H H E A S
E X Y T E E S G H N
J R C K M E A O A I
N O E A Y O M M N A
O Y P E L E E X R L

What could it mean? It's a mystery.

-- Chris Botkin