First broadcast 27th October 2010.
Joyce Reynolds, a girl who claims to have witnessed a murder, is found drowned at a children's Halloween party.
David Suchet as Hercule Poirot
Amelia Bullmore as Judith Butler
Zoë Wanamaker as Ariadne Oliver
Deborah Findlay as Rowena Drake
Mary Higgins as Miranda Butler
Sophie Thompson as Mrs Reynolds
Georgia King as Frances Drake
Ian Hallard as Edmund Drake
Timothy West as Reverend Cottrell
Fenella Woolgar as Miss Whittaker
Macy Nyman as Joyce Reynolds
Richard Breislin as Leopold Reynolds
David Yelland as George
Paola Dionisotti as Mrs Goodbody
Julian Rhind-Tutt as Michael Garfield
Paul Thornley as Inspector Raglan
Vera Graziadei (credited as Vera Filatova) as Olga Seminoff
Phyllida Law as Mrs Llewellyn-Smythe
Eric Sykes as Mr Fullerton
