I have only done one mystery quilt and I loved it. Usually I don't have a lot of time, so don't get into them, and have been intimidated by those from Bonnie Hunter as they seem very complex.
This time, however, I was called by the name of the new mystery and the colors she is suggesting so I am going to do it. I'm excited to get started, I've already pulled my fabrics and stuck pretty close to her choices.

Speaking of mysteries on this board, I 've done a few but the one I liked the most was a mystery train(don't remember the number) and it wasn't a mystery when I did it. I actually didn't even know about the MT's; but I saw Macybaby's and she said it was a MT so I looked it up and made it. So I really do better when I see it first. I could probably do BH's if I could see it first and then decide. So I'm more a sew-along quilt-along girl. And I do agree that I perfected my piecing and cutting skills from doing BH mysteries, besides patience.:p

I've actually finished only two. Years ago now. One I liked a lot...the other not so much.
Since then, I have bookmarked, downloaded, collected and otherwise saved patterns for a couple dozen mystery quilts through guilds, LQSs and online.

I like to know what it will look like just so I can decide whether or not to put in the time and resources. Takes away the mystery, but I also started putting together kits from my stash with the patterns or clues and everything I will need to complete a mystery quilt I like....then I put it / them away for many months - some for years.
By the time I get them back out to work on them, I can't remember what they will look like. And I don't include a picture of the final quilt...so...still a mystery, and no peeking for me.

It's too late to sign up for this particular one for free, although you can buy the pattern at their Etsy shop. (you can find that at the link below).
But they will be doing another mystery quilt soon - this upcoming New Year's Day 2020.
Here is a link:

https://merrymayhem.com/onedaymystery.html

Watson, that is fabulous! :)

This reminds me of 100 to 150 years ago when quilt patterns were published in women's magazines and newspapers. There would be a "gazillion" quilts of the same pattern because of folks who made use of those handy and pre-planned quilt publications. Another case of everything old is new again. We just use the internet rather than a newspaper. :o

Jump in , knee deep in fabric, grab your favorites, then start you engines.

I love a good mystery: in movies, books and quilts. The layout has always been fine with me and I do use up as many scraps as I can. I do Bonnie Hunter's mysteries, maybe a year behind, depending on my time schedule, but I'm good with those too.
I've done several Debbie Caffrey mystery quilts with a local quilt shop and it was fun. Debbie's was the first mystery quilt I ever did and it became a gift for my inherited daughter.

They do have a lot of pieces, but you do them ONE clue at a time. I'm still working on last years, Clue #5, so I'm "slightly" behind. The nice part is there is no rush. I only sew on them Wed/Thur as those are my sewing days for myprojects.
Of course there are some quilters who, I think, must stay up 24/7 to be the first to finish each clue. I wonder how they do it.

I did the Grand Illusion mystery and did not like it at all. Made me dizzy when I looked at it. Since then, I have been cautious and downloaded all the clues for each mystery before I decided to make the quilt or not. So far, I have not done any others but the pink Grand Illusion. Set them all aside for a "rainy" day. I do get all the paint chips for each mystery.

Bonnie Hunter gives excellent directions and illustrations for each clue. Yes, she uses lots of little pieces, but they all seem to come together beautifully when you follow her guidelines.

I've done one of Bonnie hunters mystery quilt. and did one of judy's here on this blog. BH's are a lot of work. and you have to be didicated to get them done. same with some of judy's. I like to look at judy's after everyone is done. keep saying i'm going to go find the directions for one or two, but haven't.