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.

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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.