Teen Girl Mystery

The troublemaker. The overachiever. The cheer captain. The dead girl. Like every high school in America, Jefferson-Lorne High contains all of the above. After the shocking murder of senior Emma Baines, three of her classmates are at the top of the suspect list: Claude, the notorious partier; Avery, the head cheerleader; and Gwen, the would-be valedictorian. But appearances are never what they seem. And the truth behind what really happened to Emma may just be lying in plain sight. As long buried secrets come to light, the clock is ticking to find Emma's killer.

Ever since The Night in Question left her with a hideous scar and no memory of what happened, Theo Lane has been hiding. An aspiring filmmaker, she uses a hidden button cam to keep the world at bay. She spends the entire summer in a Manhattan cafe, secretly documenting random "subjects".

It’s been weeks since Mena and the other girls of Innovations Academy escaped their elite boarding school. Although traumatized by the violence and experimentations that occurred there, Mena quickly discovers that the outside world can be just as unwelcoming and cruel. With no one else to turn to, the girls only have each other - and the revenge-fueled desire to shut down the corporation that imprisoned them.

A year ago, beloved cheerleader Stella Blackthorn vanished without a trace. Devastated, her younger sister, Iris, launched her own investigation, but all she managed to do was scare off the police’s only lead and earn a stern warning: Once she turns 18, more meddling means prison-level consequences. Then, a year later, the unthinkable happens. Iris’s ex-girlfriend, Heather, goes missing, too—just after dropping the polarizing last episode of her true crime podcast all about Iris’s sister. This time, nothing will stop Iris and her amateur sleuthing agency from solving these disappearances.

Trixie can't believe she's stuck in Sleepside all sumemr while her lucky brothers are away at camp. Then a millionaire's daughter moves in next door, a runaway kid hides out nearby, and rumors heat up that the old mansion on the hill is filled with a fortune. Maybe the summer won't be so boring after all!

Shortly before her 17th birthday, Emma discovers she has a long-lost twin named Sutton Mercer. She contacts Sutton, who agrees to a rendezvous but never shows up. Curious at first, Emma slips into Sutton's ultra-glamorous life, assuming her identity. When it becomes clear that Sutton is not coming back, that someone made sure she never could, Emma plunges in to investigate who could have wanted her sister gone (a fairly long list, she discovers).

Covered by vines and hidden by trees, the old gatehouse on the edge of the woods has been abandoned for years. But when Trixie and her pal Honey explore it, they discover more than just dust and spiderwebs inside. The two girls find a huge diamond stuck in the dirt floor! Could a ring of jewel thieves be hiding out in Sleepyside?

Calista, Zoe, Holly, and Denise were inseparable best friends when they spent their summers together at sleepaway camp. But after an unexplained tragedy forced the camp to close, the girls drifted apart.

Alice Ogilvie and Iris Adams became the talk of Castle Cove when they cracked the biggest case of the fall: the death of Brooke Donovan. Together, the Agathas put Brooke's killer away for good, and since then things around town have been almost back to normal. Quiet, even. But if Alice and Iris know anything, it's that sometimes quiet is just the calm before the storm. The truth is, Brooke's disappearance wasn't the first mystery to rock Castle Cove, and it won't be the last.

Seventeen years ago, Layla Trello was murdered and her killer was never found. Enter true-crime fan Piper Gray, who is determined to reopen Layla’s case and get some answers. With the help of Jonas—who has a secret of his own—Piper starts a podcast investigating Layla’s murder. But as she digs deeper into the mysteries of the past, Piper begins receiving anonymous threats telling her to back off the investigation, or else. The killer is still out there, and Piper must uncover their identity before they silence her forever.

After being placed in foster care, Rhi is hungry for a fresh start and begins working at the Happy Valley Wildlife Preserve. While in the woods, she stumbles upon a surreal sight: a pack of wolves guarding four feral and majestic girls. After Rhi gains their trust, they reveal that they’re princesses from another land, raised by a magical prophet they call Mother—and they're convinced Rhi is their lost fifth sister. Unsure what to believe, Rhi ushers the girls to civilization, where they’re met with societal uproar and scrutiny, dubbed “The Wild Girls of Happy Valley.”

When sixteen-year-old Georgia Avis discovers the dead body of thirteen-year-old Ashley James, she teams up with Ashley's older sister, Nora, to find and bring the killer to justice before he strikes again. But their investigation throws Georgia into a world of unimaginable privilege and wealth, without conscience or consequence, and as Ashley’s killer closes in, Georgia will discover when money, power and beauty rule, it might not be a matter of who is guilty—but who is guiltiest.

After a botched escape plan from her boarding school, Abigail is stunned to discover the school is actually a cover for an elite spy ring called The Center, along with being training grounds for future spies. Even more shocking? Abigail's mother is a top agent for The Center and she has gone MIA, with valuable information that many people would like to have - at any cost. Along with a former nemesis and charming boy from her grade, Abigail goes through a crash course in Spy Training 101, often with hilarious - and sometimes painful - results.

Dahlia 16 sees her face in every crowd. She's nothing special - just one of 5,000 girls created from a single genome to work for the greater good of the city. Meeting Trigger 17 changes everything. He thinks she's interesting. Beautiful. Unique. Which means he must be flawed. When Dahlia can't stop thinking about him - when she can't resist looking for him, even though that means breaking the rules - she realizes she's flawed, too. But if she's flawed, then so are all her identicals. And any genome found to be flawed will be recalled.

In this shocking psychological thriller and follow-up to The Girls I've Been, four teens face off against a wicked man in a remote forest in a desperate fight for their survival.

Sixteen-year-old Alice is spending the summer in Paris, but she isn't there for pastries and walks along the Seine. When her grandmother passed away two months ago, she left Alice an apartment in France that no one knew existed. An apartment that has been locked for more than 70 years. Alice is determined to find out why the apartment was abandoned and why her grandmother never once mentioned the family she left behind when she moved to America after World War II. With the help of Paul, a charming Parisian student, she sets out to uncover the truth.

When Jo-Lynn Kirby ‘s former best friend—pretty, nice Maddie Price—comes to her claiming to be in trouble, Jo assumes it's some kind of joke. After all, Jo has been an outcast ever since her nude photos were leaked—and since everyone decided she deserved it. There’s no way Maddie would actually come to her for help. But then Maddie is gone. As Jo digs deeper into Maddie’s disappearance, she’s left to wonder who she’s really searching for: Maddie, or the girl she used to be.

Amsterdam, 1943. Hanneke spends her days procuring and delivering sought-after black market goods to paying customers, her nights hiding the true nature of her work from her concerned parents, and every waking moment mourning her boyfriend, who was killed on the Dutch front lines when the Germans invaded. She likes to think of her illegal work as a small act of rebellion.

Jim Frayne has run away from Sleepyside, before Trixie could tell him that he is the sole heir to a huge fortune. With her best friend, Honey, Trixie sets out in a trailer across upstate New York to track Jim down...and stumbles upon another mystery along the way!

Revised edition: This edition of The Casquette Girls includes editorial revisions.