Poirot makes the acquaintance of a mysterious man who invites him to a dinner party-only for his host to wind up dead during a bridge game.
Nikki and Jack are under pressure when a teenager's remains halt an eco-housing project.
Whilst Nikki and Jack close the net on Brian Blackburn's troubled son, Leo finally finds someone willing to confirm his fear.
William fears things with Mary are ruined, but she's preoccupied with a truant teenager and her meddling mother, Molly, who's got "fix up" plans of her own.
