Aired: February 24, 1991 | Season: 3 | Episode: 9

Overview
Runtime: 48m
Directed by: Andrew Grieve
Written by: Agatha Christie, Anthony Horowitz, Clive Exton
Guest stars: Alessia Gwyther, Christopher Leaver, David Howey, Edward Holmes II, Frederick Treves, Gordon Reid, Helena Michell, Iain Rattray, James Taylor, John Dunbar, Jonathan Bancroft, Nigel Le Vaillant, Peter Aldwyn, Robyn Moore, Siobhan Garahy, Stephanie Cole, Susan Field, Tariq Alibai
Description
When the nation's security is threatened, Poirot is called in to help find a stolen ruby.