I agree he was a fraud and split when he saw that he was not successfully convining anyone but Edith.
Jeez - Edith can't catch a break when it comes to her love life.
They've set up so many things in this episode that will surely reverberate in future episodes: 1) Vera's death 2) Matthew "feels something below", 3) Sir Richard's threat over Mary, 4) Sybil and the chauffeur's growing relationship. It's like suddenly everything is much "soapier" than before. Lacking in the gentle finesse that I so enjoyed. But it's still worth watching.