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 Poirot<br />Tim Curry as Lord Boynton<br />Jawad Elalami as Labourer<br />Christina Cole as Sarah<br />Tom Riley as Raymond Boynton<br />Cheryl Campbell as Lady Boynton<br />Zoe Boyle as Jinny Boynton<br />Emma Cunniffe as Carol Boynton<br />Angela Pleasence as Nanny Taylor<br />Abdelkader Aizzoune as Concierge (as Abdelkader Aizoun)<br />Paul Freeman as Col. Carbury<br />Beth Goddard as Sister Agnieszka<br />Christian McKay as Jefferson Cope<br />Mark Gatiss as Leonard Boynton<br />Mansour Badri as Taxi Driver (as Badri Mansour)<br />John Hannah as Dr Gerard<br />Zakaria Atifi as Mahmoud<br />Elizabeth McGovern as Dame Celia Westholme
