Over on the top right of the blog you will find a button for the mystery which starts the Friday after Thanksgiving. You can also find it on Bonnie's Blog here: Quiltville . Look at her tabs on the top and down to the bottom right you will see Allietare Mystery all of your information on fabrics and clues for the mystery will appear there.
It is a lot of fun and you end up with a quilt. Hope to see you there.