juliasb.....if you miss an hour, the clue still stays there, so you can see it and catch up on your own time. You can even print out the whole thing later. As noted, eventually, she makes the pattern for sale only, so be sure to download it before that.
I found with the lap size I could keep up no problem going hour by hour and not knowing how it was going to turn out was fun for a small investment....I'm too chicken to do a large mystery quilt.
Watson