Originally published: [London]: Corgi, 2015.

Schoolgirl detectives Daisy Wells and Hazel Wong are at Daisy’s home, Fallingford, for the holidays. Daisy’s glamorous mother is throwing a tea party for Daisy’s birthday, and the whole family is invited, from eccentric Aunt Saskia to dashing Uncle Felix. But it soon becomes clear that this party isn’t about Daisy after all—and she is furious. But Daisy’s anger falls to the wayside when one of their guests falls seriously and mysteriously ill—and everything points to poison. It’s up to Daisy and Hazel to find out what’s really going on.