​Last summer Skye's sister died in an accident, and she feels partially responsible. Her parents think that a camp for bereaved teens might help her move on. 
At first camp doesn't seem so bad. But when Skye starts receiving messages on her phone from someone claiming to be her dead sister, she fears the past is about to surface.
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"Lying About Last Summer is everything that's amazing about a thriller novel. I really loved it." Zoella

Winner of Zoella Book Club 2016

Winner of Worcestershire

Teen Book Award 2017

Mae's grown up at Hummingbird Creek, an elite wellness retreat where teens get the help they need from Mae's psychiatrist father. The Creek monitors every aspect of the residents' daily life for optimal health and wellbeing, and everyone must follow strict rules. 

But after Mae is caught breaking the rules, she starts to question everything about how she lives. And at the Creek, asking questions can be dangerous.

"With vivid descriptions and striking characters, this fast-paced thriller makes for a wonderfully chilling and tense read." The Sun

Winner of the Lancashire Book of the Year 2018

Shortlisted for the South East Themed Book Award 2018

Tesco Young Adult Book of the Month 2018

Leah can't wait to spend the week at Roeshot House with her cousins Ivy and Poppy and family friend Jakob. Every year they slip away from the adults to the attic, where they catch up and make predictions for the future.

But this year their traditions are derailed by new girl Tatum, and some disturbing news: the body of a teenage girl was discovered in the garden - a secret kept for over 60 years. As Leah begins to unravel the mystery, unsettling events around the house start to mirror their predictions from last year. If she isn't careful, history could repeat itself.

"A chilling thriller with an almighty twist at the end that you won't be prepared for." South Wales Evening Post

The reigning queen bee, Kate, knows that you don't become the most powerful girl at school by playing nice.

But when other students start revealing long-held secrets anonymously, she realizes someone is playing a much more dangerous game- and they know too much about Kate's past.

If she doesn't figure out who's behind this, her final year at Pankhurst could be exactly that: her final year

"Wallman’s writing is sharp, her teenagers are well-drawn, and the plot is enough to make the parents of any teens at boarding school blanch." Crime Review

Winner of Highgate Wood Book Award 2019

Winner of Maidstone Area Book Award 2019

Shortlisted for the Amazing Book Awards 2020

WHSmith Book of the Month 2019

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On her first day at a new school, Ruby finds a note attached to her locker saying I KNOW YOU DID IT. She's terrified that someone has found out she was responsible for the death of a girl called Hannah in a playground when they were both little, something which has haunted her since. When first one, then two, students are found dead, it looks as if Ruby is being framed by another killer. Or, she might be next.

“I Know You Did It is a fantastic, gripping crime thriller from Sue Wallman which never lets up in pace and excitement” BookTrust

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 Lydia Cornwallis has arrived on an exclusive island populated by the ultra-rich and their staff. She'll need to use her money, connections and charms to earn her place among the close-knit families that rule the island. That includes the Harrington sisters, and Lydia simply can't wait to meet them.

That's because Lydia's not really Lydia Cornwallis.

And the Harringtons have hell to pay for what they've done.


“A nail-biting YA thriller of impersonation, iron nerve and revenge, for fans of Karen M McManus and Holly Jackson.” The Guardian

Nominated for the 2022 Carnegie Award 
Winner of the Grampian Children’s Book Awards 2022
Shortlisted for Cumbria Schools Library Service Spellbinding Secondary Book Award 2022
Winner of Highgate Wood Book Award 2022