Teen Girl Detective

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).

After staking out, obtaining, and then being forced to give up her first boyfriend, Josh, all Cammie Morgan wants is a peaceful semester. But that's easier said than done when you're a CIA legacy and go to the premier school in the world...for spies. Cammie may have a genius I.Q., but there are still a lot of things she doesn't know. Like, will her ex-boyfriend even remember she exists? And how much trouble is she really in after what happened last semester? And most of all, why is her mother acting so strangely?

1426, Joseon (Korea). Hwani's family has never been the same since she and her younger sister went missing and were later found unconscious in the forest near a gruesome crime scene. Years later, Detective Min - Hwani's father - learns that 13 girls have recently disappeared from the same forest that nearly stole his daughters. He travels to their hometown on the island of Jeju to investigate...only to vanish as well.

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.

There's a new girl at camp and Rebekah's mind and detective's notebook are filled with questions about her. Natasha is very mysterious and she certainly does not seem interested in making friends any time soon. And what's with that blood-red liquid that she drinks every day? Could she really be a vampire? Rebekah is determined to solve this mystery, even if she might feel slightly scared around the strange girl.

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.

Popular Daphne Blake and über-nerd Velma Dinkley aren't friends. They aren't enemies either. They don't have any reason to speak to each other, and that's how they prefer it. They grew up together - been best friends since pre-K - but when they hit middle school, Daphne dropped Velma and never looked back. These days, Daphne's deep in the popular crowd, daughter of the richest family in town, while Velma's an outsider, hiding from the world behind her thick glasses. But then Daphne's best friend, Marcy - who happens to be Velma's cousin - goes missing.

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.

No one expected it to rain that much. But the rain kept coming, the dam broke, and lives were lost. Including five-year-old Clay Michaels, who was swept away in the floodwaters. Clay’s sister, Lucy, has never forgiven herself for her little brother’s death. She was supposed to hold on to him, to keep him from harm during that terrible night. She was supposed to protect him.

Girls started vanishing in the fall, and now winter's come to lay a white sheet over the horror. Door County, it seems, is swallowing the young, right into its very dirt. From beneath the house on Water Street, I've watched the danger swell. The residents know me as the noises in the house at night, the creaking on the stairs. I'm the reflection behind them in the glass, the feeling of fear in the cellar. I'm tied, it seems, to this house, this street, this town.

Eighteen-year-old Addie Blackwood regrets nothing more than one horrible, mistake-filled night last summer. Hours after she hurled the worst words she could think of at her sister, Fiona was found dead at the bottom of a ravine. The police ruled her death an accident, but Addie’s never bought it. Her ballet-prodigy sister didn’t slip and fall; she was pushed. And Addie’s number one suspect: Thatcher Montgomery, the rich kid down the street who always had a thing for Fiona. But when Thatcher is found dead in the same ravine, Addie must admit she was wrong.

Rosie's led a charmed life with her loving dad, who runs the town donut shop. It's true her mother abandoned them when Rosie was just a baby, but her dad's all she's ever needed. But now that her father's had a stroke, Rosie lives with her tough-as-nails grandfather. And her beloved dog, Gloaty Gus, has just gone missing. Rosie's determined to find him. With the help of a new friend and her own determination, she'll follow the trail anywhere...no matter where it leads. If she doesn't drive the whole world crazy in the meantime.

Healey’s second novel The Shattering stars Keri, a 17-year-old trying to come to terms with her brother Jake’s death. Although authorities believe Jake committed suicide, Keri cannot accept that her brother would take his own life. And when she’s approached by her classmate Janna, whose brother also committed suicide years earlier, the two team up in search of answers. Soon the girls come to a grim realization—that their brothers weren’t the first in town to die under mysterious circumstances.

Everyone knows Bettina’s father was the one who murdered her mother a decade ago. It’s the subject of podcasts, murder tours, and even a highly anticipated docuseries. But after growing up grappling with what that means, a string of copycat murders forces Bett to answer a harder question: What if he didn’t? Old-money Bett must team up with the only person willing to investigate alongside her: bookish goth girl Eugenia, the mortician’s daughter, who everyone says puts the makeup on corpses. Can this “true crime princess” unmask a murderer who’s much closer to home than she ever imagined?

Sixteen-year-old amateur sleuth Roxie is shrewd, nimble, cunning, and only a little bit damaged. She also has a real knack for finding things, making her the perfect go-to detective for her rich classmates at St. Margaret when they’re looking to retrieve the things they’ve “lost”— no questions asked. So when queen bee Kirsten Montgomery-Wiggins pays Roxie a hefty sum to track down a mysterious blonde who “stole” her phone, Roxie accepts. Although Kirsten is a bully and she and Roxie have bad blood between them, Roxie could really use the cash.

When Olivia's mother was killed, everyone suspected her father of murder. But his whereabouts remained a mystery. Fast forward 14 years. New evidence now proves Olivia's father was actually murdered on the same fateful day her mother died. That means there's a killer still at large. It's up to Olivia to uncover who that may be. But can she do that before the killer tracks her down first?

Cammie Morgan has lost her father and her memory, but in the heart-pounding conclusion to the bestselling Gallagher Girls series, she finds her greatest mission yet. Cammie and her friends finally know why the terrorist organization called the Circle of Cavan has been hunting her. Now the spy girls and Zach must track down the Circle's leaders and stop them before they can implement a master plan that will change Cammie - and her country - forever.

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.

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.

They say Delia burned herself to death in her stepfather's shed. They say it was suicide. But June doesn't believe it. June and Delia used to be closer than anything. Best friends in that way that comes before everyone else - before guys, before family. It was like being in love, but more. They had a billion secrets tying them together like thin silk cords. But one night a year ago, everything changed. June, Delia, and June's boyfriend, Ryan, were just having a little fun. Their good time got out of hand.