Dolly and Oblonsky have reconciled. Everyone has tea and seems happy. Then something weird happens.
Anna goes upstairs to get a photo album to show everyone. As she leaves the front door bell rings.
A servant opens the door just as Anna is crossing the landing, and there's Vronsky. She and Vronsky look at each other, and Anna feels both pleasure and fear.
Vronsky also appears ashamed and frightened to catch a glimpse of her. Anna nods her head and moves on as she hears Oblonsky inviting Vronsky in and Vronsky politely declining.
Vronsky gives a fairly ridiculous reason for being there (that he wanted to find out about a dinner they were holding for a visiting celebrity the next day) and refuses to go inside, even though Oblonsky tries to convince him.
Kitty thinks it's because of her.
Everyone feels kind of uncomfortable about the whole episode, especially Anna.