Shiv prepares to return to London, but will she really miss Caroline's party?

Shiv has vowed to be her best self and has sworn off men. When she meets a sexy barista, her sensible birthday party with her family seems like a boring way to celebrate...

Shiv pushes things too far on a date with Alex, Caroline makes a shocking discovery about Rory, Ant is missing Bernie, and Tom gets some bad news.