Kokoro's "Tee-hee-hee!"

Nancy Drew makes plans to leave her hometown for college, but finds herself drawn into a supernatural murder mystery instead.

Based on the Pretty Little Liars series of young adult novels by Sara Shepard, the series follows the lives of four girls — Spencer, Hanna, Aria, and Emily — whose clique falls apart after the disappearance of their queen bee, Alison. One year later, they begin receiving messages from someone using the name "A" who threatens to expose their secrets — including long-hidden ones they thought only Alison knew.

Sherlock Holmes faces a sinister case risking friends' lives. American Amelia joins, seeking her father after her mother's murder. Despite differences, they solve a conspiracy and her mother's case.

The life of a group of adolescents going through the trials and tribulations of teendom at Degrassi Community School.

The story of what happens when five high schoolers walk into detention and only four make it out alive. Everyone is a suspect, and everyone has something to hide.

Fifteen years ago, the loss of three young people tore this sleepy seaside town apart. Now, the mysterious death of a young woman dredges up the past.

When Lucy Albright and Stephen DeMarco meet at college, they are at that formative age when seemingly mundane choices lead the way to irrevocable consequences. They quickly fall into an addictive entanglement that will permanently alter not only their lives, but the lives of everyone around them.

Follow the lives of an elite group of young dancers who train at The Next Step Studio.

Identical twins Leni and Gina have secretly switched places for years. But when one sister disappears, both of their lives start to fall apart.

Mother of two, Elisa, allows her daughter, Lucia, to go on an impromptu sleepover with her new best friend Josephine after meeting Josephine's mother, Rebecca, at her beautiful home. But when Elisa arrives to collect Lucia the next day, the house turns out to be an empty luxury rental and Lucia has been abducted.

H2O: Just Add Water revolves around three teenage girls facing everyday teen problems with an added twist: they cope with the burden of growing a giant fin and transforming into mermaids whenever they come in contact with water.

When a romantic getaway to Paris takes a dark turn with the sudden disappearance of her boyfriend Tom aboard a train to the south of France, Alice is plunged into a web of intrigue and danger, uncovering shocking secrets about the man she thought she knew.

In Tree Hill, North Carolina two half brothers share a last name and nothing else. Brooding, blue-collar Lucas is a talented street-side basketball player, but his skills are appreciated only by his friends at the river court. Popular, affluent Nathan basks in the hero-worship of the town, as the star of his high school team. And both boys are the son of former college ball player Dan Scott whose long ago choice to abandon Lucas and his mother Karen, will haunt him long into his life with wife Deb and their son Nathan.

Narrates the events and cases encountered by Kaoru Utsumi, a rookie detective, and Manabu Yukawa, a university associate professor, while the two pair up to solve many mysterious cases.

Set in a dystopian America ruled by a totalitarian political party, the series follows several seemingly unrelated characters living in a small city. Tying them all together is a mysterious savior who’s impeccably equipped for everything the night throws at them. As the clock winds down with their fates hanging in the balance, each character is forced to reckon with their pasts as they discover how far they will go to survive the night.

When Frank and Joe Hardy arrive in Bridgeport, they set out to uncover the truth behind the recent tragedy that has changed their lives. In doing so, they stumble upon something much more sinister - something only the Hardy Boys can stop.

A one-hour mystery full of twists and turns that follows Danny Desai, a charismatic 16-year-old with a troubled past who returns to his hometown after spending five years in juvenile detention. Immediately branded an outcast, Danny attempts to reconnect with his two childhood best friends, Jo and Lacey. But when a fellow student is found dead in her home, Danny instantly becomes the prime suspect and town spirals into a frenzy of suspicion and mystery. Jo and Lacey must decide if their childhood friend is unforgivable, or if he's really a victim being persecuted for his own twisted secrets.

Twenty years ago, a series of tragic events almost ripped the blue-collar town of Millwood apart. Now, in the present day, a group of disparate teen girls finds themselves tormented by an unknown Assailant and made to pay for the secret sin their parents committed two decades ago, as well as their own.

A college student is shot in Central Park on July 4, 2003. The investigation connects a series of mysterious citywide fires, the downtown music scene, and a wealthy uptown real estate family fraying under the strain of the many secrets they keep.

What starts as a YouTube video going viral, soon leads to problems for the teenagers of Lakewood and serves as the catalyst for a murder that opens up a window to the town's troubled past. Everyone has secrets. Everyone tells lies. Everyone is fair game.