Best teen mystery & detective stories according to redditors

Good work, internet detective.

Dude, that book and the Eleventh Hour by Base are freaken incredible. Thanks for reminding me of my childhood. I literally spent months looking/solving these.

I love The Night Circus by Erin Morgenstern. It's read by Jim Dale, the narrator of Pushing Daisies, if you ever saw that show. He has the loveliest voice ever, and the story is charming and mysterious. I loved reading it. Up the same alley is also Miss Peregrines home for peculiar children. This book is great too. Exciting and kind of magical, but without being grotesque. The link is just for a random Amazon CD audiobook, but I'm sure you can find better ones elsewhere.
I can also recommend the Falvia DeLuce series, the first book being The sweetness at the bottom of the pie. It's a great murder-mystery featuring an 11 yr old girl, and it's not violent.

Troll does not just mean a fake post. In any case, even if it is just for a promotion for Dark Knight Rises or the Spy Museum exhibit, who cares? It's still fun to unravel a mystery. Look how many people came together to solve it. Did you ever read The Westing Game when you were a kid?

Clue, I would probably say. Specifically, the one story I wrote in the fandom was a fanfic set in the old A.E. Parker Clue line of books. Used to love those books so much.

The Eleventh Hour: A Curious Mystery?
https://www.amazon.com/Eleventh-Hour-Curious-Mystery/dp/0810932652/ref=cm_cr_arp_d_product_top?ie=UTF8

Or anything else by Graeme Base

It sounds a bit like The Eleventh Hour, minus the detective agency:

The Eleventh Hour: A Curious Mystery https://www.amazon.com/dp/0810932652/ref=cm_sw_r_cp_api_i_.cVnDbYGYHEXM

Hmm, this looks similar to The Eleventh Hour, which we had as kids, and spent hours on. There's a few red herrings in it, too, which took hours to solve, then turned out to be nothing. Wholely aggravating. My mom worked on it with us, and we never did figure it out. I ended up cheating by peeking at the answer. But I still have the book, and hope to work through it with my stepdaughter.

I started her slow, by going through Puzzle Island with her. I also got The Red Herring Mystery, but we haven't solved this one yet, and we've gotten away from this. I want to work up to The Eleventh Hour, though. It looks as though Graeme Base has other books as well, which we'll have to check out. My stepdaughter is incredibly smart, and she's eight years old now, and she loves these kind of puzzles. She also REALLY relishes anything that she can do with one of her parents (and yes, I count as one of them - she really digs me these days, which is TOTALLY AWESOME! I get to really be a mom, YAY!).

Anyway, "Masquerade" in Hardback in Good condition is selling for a penny for $3.99 shipping, so I bought a copy. Looks good. :) I'm all for things like this!

World's Scariest "True" Ghost Stories by Margaret Rau?

The 11th Hour by Graeme Base

Reminds me of this, courtesy of my childhood.

Twin Spins is apparently a YA horror series that involves twins, and the cover seems to match. Other than that, I know nothing about the books.

http://www.amazon.com/dp/0759910049/ref=rdr_ext_sb_pi_hist_1

Read about that trick in a book, only it was a worm that ate into your brain through your ear and made you violently crazy.

I think it was called "Body Bags" or something (EDIT: yep).

The Ghost Twins Series? I used to read those all the time.

Could be one of the Scholastic books - https://www.amazon.ca/Trickster-Ghost-Ellen-Showell/dp/0590457950

The Secret Secret Passage - Clue Books
http://www.amazon.com/The-Secret-Passage-Clue-Books/dp/0590456318

The Clan of the Cave Bear by Jean M. Auel is my favorite book. I've read it something like 20 or 30 times. The sequels are, sadly, nowhere near as good but I never get tired of the first book and every time I've read it I've seen more in it. The first time I read it, it was purely a low fantasy novel for me, where I was impressed how alien the culture was. These days, I can't miss that the culture of The Clan is ours with a thin veneer over it, and I love how much it comments on us and how we think.

Another book that I've returned to several times, over a looonnng period of time is The Trial of Anna Cotman by Vivien Alcock it's a very different read now that I'm an adult. As a kid it spooked the hell out of me - even though it wasn't a horror book. These days, again, I love the social commentary in it and how true it rings, even though it is such a simple story. I feel like it tells a deep truth about how even innocent things can just go horrifically bad.