Secrets of the Time Society - Alexandra Monir
This book is a great set-up for Timekeeper. I read Timekeeper before this one so I know what happens already, but I wish I had this little ebook beforehand. But no matter, it got read and answered some questions for me...especially the one I had about Milicent. It gave quite a bit of information about Rebecca to set it up for Timekeeper. You can read Timekeeper without this one but this book helps get into Timekeeper and understand some things that happened.

I can say I liked this one but Timeless is still my favorite of the three books.