When an evening of bridge turns into a murder investigation, famed Belgian inspector Hercule Poirot (David Suchet) discovers he isn't the only sleuth present at the party. The host (Alexander Siddig) has also invited the superintendent of Scotland Yard (David Westhead), a representative from the Foreign Office (Robert Pugh) and a noted mystery writer (Zoe Wanamaker), a group whose talents are put to the test in solving the baffling case.