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A school mystery grows into a suspense story with gothic and fantastic touches. Blanka’s investigation draws on the convent’s history, while the Wolves’ hostility and uncertainty about whom to trust keep tension close to school life.

Nora investigates a family mystery while trying to work out whether she can rely on Patch.

Expect supernatural mystery alongside questions of loyalty: Zoey and Stevie Rae share a secret, while friendships and enmities shift around them.

Two teenagers who each believed Charlie loved only them join forces after his apparent death. Their search across several cities becomes a suspenseful journey into what they knew—and did not know—about him and each other.

Expect a historical mystery-adventure: the friends investigate a suspicious death, seek proof about an earlier imperial murder, and encounter danger on the Roman frontier.

This is a diplomatic-setting mystery about a teenager pursuing answers about her mother’s death while navigating other people’s disbelief and uncertain loyalties.

Expect a secret-agent assignment built around suspicion: Andy must choose between a model student and an antagonistic, angry student as his target. The central tension is whether he can identify the right person before NTRP notices him.

A supernatural adventure follows Sarah as she inherits a demon-hunting mission after her parents die. Her dreams, developing powers and uncertain trust in a newly arrived cousin shape her attempt to face the threat.

Expect an imaginative adventure built around a long-running journey, strange creatures and a mystery about the Hawk.

This is a fast-moving escape-and-reunion adventure, with the Toa split between prison and flight. Its central draw is how they respond to betrayal while trying to confront a new enemy.

A 21-book adventure collection, with the featured stories involving secret places, a circus-linked mystery and someone watching on an island.

A club-saving mystery driven by four friends’ attempt to secure money intended for their Boys Club.

A chilly carnival mystery turns into a rescue-and-detective adventure, with the gang trying to stop a giant and find out what is really happening.

A school experiment meant to defend Samara's character becomes a puzzle involving unusual DNA patterns and undeciphered manuscripts. The story also brings faith, aliens and uncertainty into the discussion.

This is a clue-led detective adventure, combining a stolen key, a hidden deed and a second case involving the brothers’ father.

This is a relationship-led mystery about missing-person rumours, trust and deception. Kalah’s feelings for Beth are set against a friendship group shaken by Beth’s disappearance and Britney’s death.

A twin’s disappearance drives the mystery, while Ivy’s attempt to uncover the school’s secret gives the story a trail of clues to follow.

The setup has a comic contrast between Lindy’s dislike of cucumbers and the festival’s cucumber dishes, with an unsupervised goose adding to the mix.

A fantasy mystery pairs Cat’s investigation of a strange egg with Marianne’s decision about her own magic, while family secrets and disruptive spells complicate their efforts.

This is a clue-led adventure: the sisters pursue a family mystery, and their determination to unmask their enemies drives the investigation. Expect suspense alongside the puzzle.

A camp mystery drives the story, with Sam and Ally following clues while friendships and threats complicate their search. The mountain setting is part of the adventure.

This is a fantasy quest built around riddles, hidden knowledge and a search for the High One. Its mystery is personal too: Morgon seeks the meaning of the stars on his forehead.

Expect a playful, mysterious framing around questions of identity and secrets, alongside references to the Baudelaire orphans and a sad dedication. The book’s warning signals an intentionally unsettling atmosphere.

A Halloween ghost mystery combines with a robbery investigation involving the girls’ friends, giving the story two cases whose clues may intersect.

A circus-loving boy joins his performer uncle for a summer of clown training; the strange, increasingly frightening circus holds a mystery connected to Clown Street.

This is a school-setting adventure built around unusual abilities, a family mystery and a hidden scheme.

This is a lively summer story about friendship and competing interests, with a rumoured hidden fortune adding a mystery thread.

This is a clue-led family mystery, with Avery seeking answers about her inheritance and the Hawthornes. Romance and danger also feature, so the appeal may depend on how much a reader enjoys those strands.

A teen relationship story with a mystery at its centre: Mia’s guardedness, her ties to two brothers and strange events around their friendships drive the setup.

A science-fair setback leads Amanda to a scholarship at an elite school for aspiring scientists, where a troubling discovery changes the picture.

A summer romance and a mystery meet in a beach-town fantasy, as Sam tries to understand the unusual girls and the secrets surrounding their community.

This is a clue-led adventure that combines a family mystery with espionage and a secret royal connection. The plot brings DJ and Charlie together in England.

A useful choice for readers drawn to supernatural mystery, secretive communities and a protagonist whose unusual inner connection may be more than imagined. Its central relationship is presented as both compelling and dangerous.

A historical family mystery follows two cousins, their linked heirloom necklaces and the secrets they discover at a manor. The First World War’s approach interrupts their reunion and shapes what happens next.

This is a school-set mystery where friendship, attraction and uncertainty about what lies ahead sit alongside a potentially deadly plot.

This is a secret-filled YA mystery for readers who enjoy impersonation plots, shifting suspicions and supernatural uncertainty. Its appeal lies in clues, red herrings and a surprise-oriented ending rather than a straightforward investigation.

A family mystery combining time-period portals, a missing mother, a threatening stranger and a house full of secrets. The story appears to build suspense through pursuit, uncertainty and questions about who is watching the family.

A cross-generational mystery unfolds through Henni’s investigation and emails with Leo. Alongside puzzles and friendship, the book examines migration, prejudice, belonging and the pressure placed on people whose home is questioned.

A fast-moving supernatural murder mystery about twins, secrets and social performance, with a strong identity-swap premise. It offers suspense and clues, while leaving the central crime unresolved at the close.

A lively mystery set around art, deception and relationships, with a bold young investigator at its centre. Alongside suspense, it explores artistic value, loyalty, jealousy and the difference between legal wrongdoing and deeper moral harm.

This is a horse-centred mystery-adventure about Hailey, her friend Elaine, and Freedom, a foal with unusual connections to the past. Suspense grows through a disappearance, a dangerous flood and a threatening adult figure.

This is a child-centred mystery adventure combining seaside exploration, hidden places, secrecy and a rescue involving a royal child. Its appeal appears to lie in teamwork, discovery and sustained pursuit, though the ending and the intensity of the danger are not described.

Choose this for a reader who enjoys twist-led YA mysteries, complicated family revelations, secret societies and lively dialogue. The book offers suspense, social intrigue and friendship, though its many identities and past connections may require close attention.

This is a high-stakes adventure about belonging, trust and inherited beliefs. Petrel’s rescue of a mysterious boy brings her out of hiding and into conflicts involving shipboard factions, lost history and hostility towards technology.

This is a brisk child-centred mystery in which Benjie’s enthusiasm for spying and Pete’s protective actions help uncover burglaries. Suspense comes from the family’s vulnerability and Benjie’s capture, while humour and animal loyalty soften the danger.

This is a wartime mystery-adventure about bereavement, abandonment, danger and the difficult beginnings of family trust. Expect suspense around a killing, a disappearance and a hazardous rescue, alongside Florida landscapes, historical conflict and a blood-moon legend.