What Are You Looking For?

The mystery pairs seasonal spookiness with a more personal puzzle: how to judge coincidences when you are worried. Mary Anne’s friends are part of the investigation, not just bystanders.

A supernatural romance-and-peril finale, with two intertwined strands: Sydney’s pursuit of a former enemy and Adrian’s investigation of spirit magic. It is the sixth Bloodlines book.

This is a neighbour-focused mystery in which Lydia and her sister pursue answers together. The plot’s appeal centres on puzzling discoveries and growing suspicion rather than an informational topic.

This is a child-led detective mystery with an environmental question at its centre. Hannah’s investigation unfolds alongside her and her mother’s unsettled living arrangements.

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

Expect a character-led fantasy mystery with two narrators, a homecoming and an investigation. Friendship and banter sit alongside questions of blackmail, suspicious fires and Michael’s unease about being useful.

The mystery centres on the callers’ silence and Claudia’s suspicion. The group’s investigation has “mixed results”, though what those involve is not specified.

A summer job turns into a mystery involving a frightening costume, stolen money and suspicion falling on Clay’s friends. Clay decides the incidents are connected and sets out to investigate.

This is a detective-style mystery centred on Marika’s efforts to understand the unusual attention surrounding her new friend. The appeal is likely to be the puzzle and its successive twists.

A moody mystery about a teenager adjusting to a rural home, a child's death, and her determination to investigate. The river and surrounding woods contribute to an atmosphere of isolation and unease.

A mystery built around a discovery, a suspect Parker distrusts, and an investigation that draws in his more cautious friend. Their search leads to a frightening secret and a tense situation at the shop.

This instalment combines comic family friction with mysteries and a perilous-sounding effort to guard a valuable diamond.

Frank and Joe Hardy investigate Daisy Rodriguez’s disappearance. Her father is frantic and wonders whether it is linked to an earlier disappearance at his amusement park.

A group of friends takes on a first mystery during a Florida vacation, investigating unsettling events at a cabin. The story sets up a question of human trickery versus haunting.

This is a detective mystery built around a murder, a cryptic clue and a husband whose alibi complicates the case. Two investigators work together as the investigation proceeds slowly.

A boat purchase leads the Hardy Boys into a mystery about a stolen ship and suspected hidden treasure, with friends joining the investigation. The appeal is a team-based detective puzzle.

This is a fast-moving detective adventure combining a family crisis with threats to people and the natural world. The Hardy brothers investigate several dangers while trying to reach their father.

A horse-and-friendship mystery with a ghostly possibility at its centre. The girls’ visit also brings them into the workings of a family-run holiday business.

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 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.

A travel mystery follows Maddie’s first trip abroad and her search with Ryan for the truth about his father’s death. Their journey also prompts Maddie to consider what she wants from life.

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

This instalment combines the brothers’ search for a forbidden book with Mustang’s investigation of synthetic beasts. Encounters from the characters’ pasts and family memories connect these storylines.

A summer mystery pairs Penelope's practical approach with her grandmother's belief in aliens. The missing cats and unusual sky lights give them a shared puzzle to investigate.

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 horse-rescue story runs alongside a mystery: Jas grows attached to Shadow, then investigates a clue about his identity. The plot also places her in a new foster home.

A supernatural mystery is interwoven with familiar pressures: Jack is weighing his future, dealing with family distance and managing feelings for a close friend.

A fast-moving mystery follows Tandy as she investigates alongside her effort to clear her brother. Its suspense also comes from her fear that she may match the killer’s targets.

This is a farm-set mystery about loose llamas, unexplained events and a telescope that may be watching the group. The children investigate, with Jean eventually joining the team.

This fantasy mystery combines a missing-person investigation with a city divided over the loss of magic. Mary Elizabeth’s close relationships are also drawn into the case.

A group of friends pursues an unidentified adversary amid prom preparations, personal secrets and investigations. Expect a mystery-driven story with several character threads rather than a purely school-focused prom plot.

A boarding-school mystery about belonging, conformity and noticing when a prestigious institution’s promises may come at a cost.

A mystery-adventure about friends investigating an abduction while coping with unusual abilities and strained group bonds. It may appeal to readers interested in crime-solving with a supernatural twist.

A glamorous family-business launch turns into a murder mystery, with three sisters taking the investigation into their own hands. The premise combines social-status trappings with a classmate's death.

This combines a murder investigation with teenage attraction and secrecy. Aphra’s isolated resort life and her curiosity about the guests bring the mystery and relationships together.

This combines historical adventure, time travel and family mystery. Its emotional centre is two siblings trying to make sense of divorce, relocation and separation while pursuing clues across centuries.

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 map-loving pupil faces a mystery after secret maps about school life disappear and threatening notes arrive. The investigation offers puzzles, inventive interests and school relationships, while privacy and the effects of representing other people deserve attention.

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.

A supernatural mystery about Janie, whose cemetery sketch seems to carry a message from beyond the grave. Her friendship with Bobby and Keith develops alongside questions about belonging, belief and a secret connected with the dead.

A fast-moving horror mystery places two newcomers inside a cheerleading squad beset by danger. Its central appeal is suspense: the sisters must work out what is happening while the threat to the team escalates.

A suspenseful family mystery follows Footer as she investigates what happened after a devastating fire. Her mother’s bipolar disorder and Footer’s uncertainty about her own perceptions make the investigation emotionally complicated.

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.

A straightforward mystery with a teenage investigator, a friendship that supports the enquiry, boxing as a recurring motif, and danger that increases as questions are asked. It offers clues, action and school intrigue rather than an unusually experimental structure.