I don't crochet often--but, darn, this looks like fun! Plus, there is an opportunity to learn new techniques in the crochet world.
Lila Bjorn is creating this interesting mystery (and you know I love mysteries!) in overlay and granny squares crochet--
I'm familiar with granny squares but Overlay?? Not a clue!
But, take a look at her blog every Friday--
there will be videos, tutorials, even a Pinterest Board.