First broadcast 25th December 2009.br br Poirot visits an archaeological dig in Syria and meets Lady Boynton, a sadistic woman who dominates the lives of her adopted children.br br David Suchet as Hercule Poirotbr Tim Curry as Lord Boyntonbr Jawad Elalami as Labourerbr Christina Cole as Sarahbr Tom Riley as Raymond Boyntonbr Cheryl Campbell as Lady Boyntonbr Zoe Boyle as Jinny Boyntonbr Emma Cunniffe as Carol Boyntonbr Angela Pleasence as Nanny Taylorbr Abdelkader Aizzoune as Concierge (as Abdelkader Aizoun)br Paul Freeman as Col.