That does sound interesting! I went through several phases of reading: first I was all over the place as a young reader, then I got hooked on Nancy Drew, then I loved Romance, then I was into Historical Fiction, then Mystery, and now Fantasy. Sci-Fi was and never will be my type, though I do love Lunar Chronicles.

Recommendations: The Penelope Treadwell Mysteries; a Trilogy, though unfortunatly could only read the first book, because our library did not own the other two. I beleive that the first book is called, Twelve Minutes to Midnight. It's about a 13 year old girl (Penelope) who writes stories under an alias for her adoptive father's newspaper. She is the town sleuth, though she does not always get the credit she deserves. Um, that's a bad summary, but as I said, I only read the first book!

The Enola Holmes Mystery Series. I love, love loved these! It's about Sherlock Holmes's kid sister, Enola, who her brothers severely unerestimate. When her mother disappears in the first book, she goes off in search of her herself, leaving her brothers thinking that she is a hysterical runaway, in need of a stern father and boarding school. She eludes her brother's attempts to find her over the course of several books, all the while Enola donning ingenious disguises and cracking cases, though the ending is simply splendid. It's one of those series that keeps you scrambling to find out what happens next. The first book is called The Case of the Missing Marquess.

Ooh, murder mysteries! You have GOT to read Agatha Christie! She's written a whole bunch of books...around 40, I think? I don't really now. But they are all SUCH good murder mysteries! I don't know the one you are talking about, but my favorite is called And Then There Were None. It's about 10 people who were invited to stay at an island, then all routes back to the mainland are closed off, so they have to stay at the island. Then they start dying off, one by one ... and it turns out that the murderer is one of them. It's SO good!

OmGandalf, If you like Agatha Christie, you have to watch the BBC series Agatha Christie’s Hercule Poirot. David Suchet, who plays Poirot, is absolutely amazing!! The seasons up to 8 are amazing, but the seasons after that get, well, Dark. They're the best murder mysterys right along with Jeremy Brett’s Sherlock Holmes. 

Murder on the Orient Express by Agatha Christie, if you haven't already read it. It's a bit slow in the beginning, but it gets good.

Absolutely one of the best books of all time: Greenglass House.

It's more of a mystery than a murder mystery; I can't remember if anyone dies or not. But it's a page turner until the end! I found Agatha Christie hard to get through, but this one was amazing. :)

~Starseeker 

There are a few mysteries I like.

Murder is Bad Manners / Poison is Not Polite by Robin Stevens. This was probably one of the first mysteries I ever read? (Mystery isn't my first genre choice ;)) These are so. Cute. They're told from the POV of Hazel Wong, whose best friend is Daisy Wells, and the mysteries they end up solving at The Deepdean School for Girls. *****.

A Pocket Full of Murder / A Little Taste of Poison by R.J. Anderson. These are pretty cute, but a little darker then MiBM/PiNP. The second book JUST came out, so I'm getting ready to reread the 1st and begin the 2nd. ****?

Agatha: Girl of Mystery by Sir Steve Stevenson. There are 10 books in this series now, and I've read the first 8. (The Curse of the Pharoah, The Pearl of Bengal, The King of Scotland's Sword, The Heist at Niagara Falls, The Effiel Tower Incident, The Treasure of the Bermuda Triangle, The Crown of Venice and The Kenyan Expedition. The last two are The Hollywood Intrigue and The Crime on the Norwegian Sea.) These are SO CUTE! They follow 12-year-old Londoner Agatha Mistery and her exotic Mistery family, including Dashiell (Dash) Mistery. The 14-year-old boy is lazy as anything, but he is a student at the prestigious Eye International Detective Academy. (But in my opinion, Agatha is the actual student.) Agatha, Chandler the butler, Dash and Watson the fluffy Siberian cat always end up on these crazy adventures with some other member of the family. Really cute, *****.

The Wollstonecraft Detective Agency by Jordan Stratford. There are 3, 4 soon books out now. (The Case of the Missing Moonstone, The Case of the Girl in Grey, The Case of the Counterfeit Criminals, *The Case of the Perilous Palace* (doesn't release until April 7)) These follow 12 year old Ada Byron and 14 year old Mary Shelley and the detective agency they start. It's set in England (obviously), and although it is historical fiction, the two girls weren't alive at the same time, nor did they start a detective agency. There are so many good words and things in these books though, that I can forgive that. "Peebs" (Percy Byshe Shelley) is their tutor an--oh. It's just too adorable. *****.

Agatha Christie (ones I've read/have in my TBR right now: Murder on the Orient Express, Hercule Poirot's Christmas, The A.B.C. Murders) These are suprisingly good, but I don't think I need to say anymore on these. *****

The Adventures of Sherlock Holmes by Sir Arthur Conan Doyle. This one is good. About to reread. More later. ;) 

I love mysteries way more now then I ever have! More later!! 

I recommend the "The Cat Who" series.  It's about a murder journalist named James Qwilleran who has two Siamese cats named Koko and Yum-Yum who help him solve murder mysteries.  It's cool because it's written in third person and the cats seem to have their own personalities.  It was written from 1966 all the way up to 1995, one book a year, so there are 29 books.  I haven't gotten farther than the 6th book, but as far as I know, they're really good.  If you love cats, and mysteries, you should read it!

ANYTHING BY AGATHA CHRISTIE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Except And Then There Were None. do NOT read And Then There Were None. it is her creepiest book. make that one of THE creepiest books. ever.