While on a seaside holiday with their friends, Daisy and Hazel discover the body of swimmer Antonia Braithwaite - nicknamed The Pearl - on the beach. Everyone presumes that she drowned accidentally - but how could such a famous swimmer have struggled to swim? Can the Detective Society solve this mystery? Or will they sink under the pressure?
ARSENIC FOR TEA
Schoolgirl detectives Daisy Wells and Hazel Wong are at Daisy's home for the holidays, and Daisy's mother is throwing a tea party for her birthday. Then one of their party falls seriously, mysteriously ill - and everything points to poison. The Detective Society must do everything they can to reveal the truth . . . no matter the consequences.
FIRST CLASS MURDER
Daisy Wells and Hazel Wong are taking a holiday on the Orient Express - and it's clear that each of their fellow first-class passengers has something to hide. Then, during dinner, there is a scream from inside one of the cabins. When the door is broken down, a passenger is found murdered, her ruby necklace gone. But the killer has vanished - as if into thin air. Daisy and Hazel are faced with their first ever locked-room mystery..
JOLLY FOUL PLAY
Daisy and Hazel have returned to Deepdean for a new school term, but there's a new Head Girl, Elizabeth Hurst, and a team of Prefects - and these bullying Big Girls are certainly not good eggs. Then, after the fireworks display on Bonfire Night, Elizabeth is found - murdered. Many girls at Deepdean had reason to hate Elizabeth, but who might have committed such foul play? Can Daisy and Hazel solve this mystery?