Krimi. Schoolgirl detectives Daisy Wells and Hazel Wong are at Daisy's home, Fallingford, for the holidays, when Daisy's mother is throwing a tea party for Daisy's birthday. Then one of their party falls seriously, mysteriously ill and everything points to poison. With furious storms preventing anyone from leaving, or the police from arriving, Fallingford suddenly feels like a very dangerous place to be. No one at Fallingford is what they seem and everyone has a secret or two. And when someone very close to Daisy looks suspicious, the Detective Society must do everything they can to reveal the truth - no matter the consequences