Agatha Christie's Poirot: Cat Among the Pigeons

Schoolgirl Jennifer Sutcliffe becomes embroiled in a mystery when priceless jewels are hidden among her belongings. The precious stones once belonged to a prince who fell foul of a revolution, and now his cousin is a pupil at the same school as Jennifer, where Poirot finds himself drawn into the unlikely situation and realises nothing is quite what it seems. David Suchet stars as the Belgian sleuth, with Harriet Walter (Law & Order: UK) and Claire Skinner (Outnumbered)